I just don't like Python for actual applications, its slowish, easy to run into run-time issues, etc.

I think Python is fine for some small programs or scripts.. But for servers and real applications I would even consider either Go, C++ or Rust (hack even C#). Its not just me I think, but just in general.

Note: I have nothing against Copyparty, in fact I'm willing to give it a try. And its also not a personal attack.