I'm not really a fan of Overwatch, as such, I don't really have much opinion in the matter.
However, ultimately, if fans feel that something is being changed for reasons they disagree with, they have a right to voice such an opinion.
The removal seems really dumb, so, I can't really fault a number of other companies mocking Activision-Blizzard for it. I mean, a key part of the internet is making fun of dumb shit.
Be it a Microsoft conference with a guy saying "TV" 100 times, or Activision-Blizzard removing something from a game for unpopular reasons.