I think that, perhaps, the user is trying to use Lemmy as Reddit, rather than using some of the fantastic quality of life improvements that evaporated with the API nonsense.
For example, blocking users and communities (and soon instances). Some users and communities, even if I enjoy them or the instances that they are on, sometimes are just too toxic for me. And that isn't to say that the comms and users necessarily are (sometimes they are) but, that sometimes engaging with some comms and users either causes undue stress or temptation to get involved in an Internet fight. That's not behavior that is good for us, even if it sometimes feels good in the moment.
I'm hoping (and have suggested) that a "timeout" feature gets added to allow one to readily self-regulate and disengage when they find that interactions are approaching the sorts that are algorithmically encouraged on commercial social media platforms. The outrage machine is just terrible and I've found myself much happier and in a better headspace since leaving such platforms. Added bonus is that transphobia actually gets taken seriously on most instances and, while it doesn't technically impact my as a cis guy, I'm much happier knowing that people are able to feel safer to be themselves (or come to terms with themselves).
As for the complaint about people being more likely pedantic or correct people on technical details, I love that - finding out that I'm wrong about something is fantastic because that means that I learned something. When there's topics, like tech, where there are often correct and incorrect answers and they change or get added to regularly, one really needs to leave the ego at the door. We're all humans (and bots and human facsimiles), which means we'll be wrong from time to time. It's a fact of life, effectively in environments where there are a lot of knowledge-workers and the medium of communication is directly related to the topics.
Personally, I'd like to see more comms regarding to digital circuit design and open-source silicon.
I also think the website is exceptionally good, and has a unique distinction of being equally good on desktop and mobile. Feel that the website is so good on mobile that I don't need to use a mobile app, and I sure as heck can't say that about Reddit.