I don't mind if the editor guesses wrong when I hit Enter and it tries to guess where I want the next line of code to start. I can trivially fix that.

I don't use a "reformatter" on my Python code, because I already automatically write code with the formatting style I want. But a tool meant for things like converting lists from inline to one-item-per-line, or enforcing a convention for trailing commas, or whatever else like that... should absolutely not be touching the indentation except to enforce 4-space indents.