As I mentioned in another thread (now - a duplicate of this one) I believe I read in the Markdown specification, that one should use either tab or 4 spaces for indentation of lists.
I can try to find where I read it exactly.
So why 2? or 3? I think it’s not very useful to use these values at all. I’d just remove the corresponding configuration.
P.S. Of course I understand that you can have lots of notes with say 2 spaces. I myself have thousands of them 