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.
> basedpyright re-implements many features exclusive to pylance - microsoft's closed-source extension that can't be used outside of vscode.