After doing some quick investigation it looks like the badge has not been rewarded on the site since December 2021.
Which could mean a few things:
- There is a bug with the rewarding of the badge.
- The badge can only be awarded once and every tag with 50 posts created since 2021 has been created by someone that already has the badge.
- The tag was created by someone else and then deleted so my question didn’t actually create the tag (seems unlikely given the lack of others earning the badge).
Any ideas on what’s going on?