Not true, I actually checked my achievements. Less people have "Full spectrum warrior" which is to ignite 3 players using rainblower taunt and 6,2% (including me) have it. Even rarer is "Flip-kabob" and 5,3% players (including me) have it
Do you have The Great Deflate? It’s quite the interesting achievement. I got it by making a server full of 60 enemy spy bots and PRAYING they disguised as me (a pyro with balloonicorn equipped) so I could kill them… I killed over 800 of them for like 60 balloonicorn kills until I got it🥶