No, no, no!
It was supporting all the desktop extensions. For years. Until the damn buggy rewrite for no good reason. And then we were suddenly left with like 5 of them.
For a year after that I was still running the last stable release. But unfortunately the web evolves too fast.
Yeah I suppose so. I have a BUNCH of extension on my desktop Firefox, but I don't need much on my mobile version tbh. Especially since I have a few extensions that work for websites that already have apps (like I have sponsorblock and pockettube for YouTube but there's no point in installing them on my mobile FF since I have the YouTube app so...).
No adblocker, sponsorblock, or return the dislike button.
I also don't use the app for a website if the mobile website is good enough. Less software on my phone, so a reduced amount of storage used on apps, fewer updates, hopefully reduced CPU and battery consumption, fewer security issues, reduced data collection, and my phone is just a little cleaner to use. Everyone has their own preference, this is just mine :)