I use Jetbrains Rider on Linux which runs just fine. It takes some setting up to install .NET but it didn’t take me too long. Except for pre-release versions, that might take more trial and error.
Overall I’m pretty satisfied with the switch to Linux and I haven’t had any major issues. Not with video games, either. Protondb.com is a good website to see what games do and don’t work on Linux and you may need to add launch options to get specific games to work or switch to a specific version of Proton.
It’s up to you to decide if it’s worth it for you or not. You could try a dual boot setup first.
I don’t think it’s the size but more the number of communities and how active they are. So if there are more people here it hopefully means there will be more active users as well. And perhaps more niche communities.