I mentioned it in my initial comment. Ideally, I would like to use the same type checker/LSP for a language everywhere (any of my local editors, CI/CD).
This is especially important when working in a team setting.
It doesn't feel great to use a forked type checker/LSP that's not enforced in your org's CI/CD. And it also doesn't feel great to force the forked type checker onto the entire organization when only a subset of folks may be using a forked vscode editor.
Very excited to have a new fully featured Python language server working in both vscode and vscode forks (e.g. Windsurf, Cursor).
Pylance is borked on these forked distributions, so having a new solid alternative here that doesn't involve adopting yet another forked Pyright implementation (BasedPyright, Cursor Pyright, Windsurf Pyright, ...) sounds great to me.