The TLDR here is that one of last year's dark patterns was that you could only hide your profile for up to a year. We changed that immediately after last year's

The TLDR here is that one of last year's dark patterns was that you could only hide your profile for up to a year. We changed that immediately after last year's thread, and you can now hide it indefinitely, but we didn't retroactively apply that fix (which we'll do now). See top-level comment for more details.