Some people just crave being part of contrarian groupthink. Turn it around: if a guy (Rupp? Osako? Kipchoge?) made those comments about sub-elites and posted the Bumble text on IG, nobody would be having this reaction that "he's immature" (at age 27) or "that's just mean." He would be universally praised for being a serious competitor getting ready to do battle and then letting people in and having a sense of humor about being the butt of obnoxious questions.