Without disagreeing on the specific points about the tooling, I’m not convinced. Golang took off with a far weaker tooling story. Maybe the table stakes have changed in a decade - but I believe other factors are more important. Moreover I remain skeptical that even if those tooling issues were fixed tomorrow it would help Nim turn the corner.
Maybe! It would get me on board, though :) I'm working on a new server side project and am using Java for now, because of this reason. I hope someday I have time to help build IDE plugins and so on :)