Not sure that many OSS projects are going to be interested in merging a patch where a conversation with the patch author for review/feedback can't happen
As a maintainer myself, I can respect that. If the PR is important enough, I'm more than happy to merge it without knowing the author (with some additional tweaking if necessary).
Big projects? no.
But I sometimes submit patches to small projects that I've integrated into personal projects, and pretty much every patch I've ever submitted has been accepted without comment.
I set my git username and email to "<>" at the global level, which completely breaks githubs UI, and people /still/ accept the pull requests.