Yeah, I have seen reports of GitHub denying registration with an SL alias. But, it seems that might of been fixed since I just created a GitHub account with an SimpleLogin domain and alias.
Ya, itâs the best way for keeping track of things.
Ya, it doesnât do anything for privacy, itâs just kinda keeping the format + I donât have to think of a unique name for things I have multiple accounts for using the custom domain. (Basically, itâs just my way of being lazy with custom domain naming.)