[gs17]

It's odd that they focused so much on "it's better than regexes" when it doesn't handle these cases where a regex would do well.

[choraria]

The comment on regex was really because that's what I did when I built internal reserved usernames list of 2 of my URL shortener projects. I love regex, btw. BUT, I don't think they cover all of what we need with usernames specifically. Shared some more insights on the thread about variations too (like underscores etc.).