For what it's worth I was able to go through and manually edit the profile database to remove the avatar. You can use something like the SQLite Manager plugin or Jetbrains' DataGrip.Depending on where your files are (for MacOS in ~/Application Suppo...
It is deeply disappointing this has several pages of comments going on over a year and no resolution. Why is this not being worked on over, say, shoving AI in which gets lots of active pushback?