There really is no need to haul 3 tons of steel around with you, and as more and more extreme weather events happen you'll have more and more people looking around for others to blame, and oversized cars which are clearly unnecessary for work (especially the ones with Internal Combustion Engines) make for big very visible targets, with the added factor that in some places they're seen as conspicuous displays of wealth (and flaunting wealth will be another thing that's likely to become frowned upon within the next 2 decades).
Not saying that SUVs are all to blame or even that the rich ride them (in my experience they're more the cars of a certain middle class), but they're in that spot of being abundant enough and yet only a minority of cars, easy to spot, often imposing in a showoffish way and logically more poluting that smaller cars, all this right when the impact of Global Warming is really and properly starting to be felt, something which at the current rate will get much worse in 2 decades.
Also, unlike big oil companies SUV owners don't have PR departments with hundreds of millions of dollars of budget to sway the press and swindle the useful idiots.
Eating factory farmed meat. With the way politics is headed there will be some politician at some point in the future trying desperately to defend his high beef consumption in what will become known as Burgergate.
Also, islamophobia in the context of defending religious nutjobs. For instance, it is islamophobic to complain about a muslim (Sikh, in reality) man at an airport because he "looks like a terrorist". It is not islamophobic to suggest that female students should be allowed in public schools just like male students. Both of these things have actually happened, very recently, and the latter was defended because people were scared shitless of being called islamophobic. We have to have some minimum human rights standards that religion cannot interfere with, and blatant sex-based discrimination is one of them. I do not give a flying fuck what your religion teaches you.
excessive alcohol consumption. I'm not saying I think there will be prohibition, but maybe it won't be so normal to get almost blackout drunk, or everyone drinking at parties to be the norm.
Dystopic I know, but hear me out. I think this is already on the cusp of falling out of social norms as there are shows that let the American public gawk on the dynamics of very large families. Of course an "excessive" amount is vague and subjective but there is growing evidence on poorer outcomes for children who may have less nurturing and less family resources due to competition from having too many siblings. I myself come from a large family - so this is casual speculation from having witnessed the VERY different family dynamics from friends who came from single or two-child households.
I would gladly answer your question, and I know Im going to get downvoted because I won't exactly answer it. So understandable if you downvote me for not providing an answer, all I want is to apologize coz I like actually providing productive answers.
I just want to apologize that Im not willing to invest time into re-iterating my thinking into "why I think signal is not 'fun' to use". I dont wanna invest my time into re-installing Signal, writing a list and an essay about it etc and then going back and forth with you.
It would require much effort from my time to do that and in detail and we would go back and forth, so I'm just here to apologize for not responding to your question because it's a great question. I always like to give detailed answers but just not willing to invest my time into this discussion for which Im sorry. I hope you get an answer from somebody else if someone else shares the same opinion.
For context, and why I'm judging Signal harshly, I'm a software engineer at Powerfactors, and used to be a Frontend developer, now I'm professionally a Backend engineer. And I've started as a Fullstack and Freelancer. So I kind of understand both sides and trying to understand the user as well. Like I try to understand users like my Grandmother, my mother, to a programmer or a graphic designer. I try to understand who the software is for, and how to make it appealing to them and useful.
I make my own Project which I re-iterated many times throughout the years to make user friendly and "fun" or easy to use or actually useful for clients to use. So when I use a piece of software I think in detail what could be done better and what could have gone bad from both frontend, backend, and UX/UI and I like the OSX/Apple philosophy on this one. That's as much as you're gonna get from me, Im NOT going to re-install Signal again and write a piece of list and essay coz I know this is gonna take much of my time, it's who I am, I like writing detailed essays and answers + (i accidentally deleted my last answer instead of clicking edit i clicked delete).
edit: Again, I wanna emphasize, your question is awesome, if somebody here is UX/UI specialist, or knows about user-experience in general for some reason, and has the time to invest, you have my blessing. I'm making the comparison between Telegram, WhatsApp etc. vs Signal for context and why my opinion is that Signal falls besides them. + As you can see I'm not "arguing in bad faith". Im here to discuss.:)