The criticisms I’ve heard:
I have been using versions of GNOME for about 5 years now and I have always been able to customize my DE to a very high degree. Out of every random extension I’ve tried, probably 80% work, and that is even counting unmaintained ones that haven’t seen an update in years. And out of those extensions I chose to keep using, I’ve only have an occasional stability issue. I think I’ve actually experienced that once since 2021 when I switched to Linux as a daily driver.
Maybe I’m just asocial but I don’t expect to reach out to my software devs and influence them at all. Unless I reported a bug and they were a dick about it, I’d probably never complain about the devs. And lastly I think the design philosophy is excellent. Maximizing screen real estate while being quite flexible, rejecting everything shitty about windows and incorporating everything good about macOS.
Every problem I’ve had is so far outweighed by the positives that it’s not remotely close. It makes sense to me that it’s so popular. KDE on the other hand… I am glad it exists but I wish it were better. I feel like it literally wants to be windows. People say it is SO customizable and I was convinced to give the latest version a chance recently. It does not feel like finished software to me, tbh. Before I could really give it a shot I needed to customize the UI to be more minimalist. I found the UI to do that quickly. Within five minutes I had crashed the desktop several times, and I felt unable to achieve what I wanted at all. The drag and drop UI for the taskbar area wasn’t stable in my experience. It kept crashing AND wouldn’t do what I wanted.
What criticism of GNOME is so well deserved? I just don’t see any criticism of it that I feel is deserved. Meanwhile KDE seems janky to me and to this day I haven’t once seen anyone hate on it. You’d think it was basically perfect.