why does the far right occupy all the spaces involving fitness & sports?

i was scrolling through tiktok earlier and a post came up about two UFC fighters, Bryce Mitchell and Conor McGregor. I’ll summarize their recent controversies quickly; Bryce Mitchell came onto a podcast and said “I honestly think Hitler was a good guy based on my own research – not my public education, indoctrination. I really do think before Hitler got on meth, he was a guy I’d go fishing with,” and Conor ranted on twitter about one of his former opponents, Khabib Nurmagomedov where he dropped the N word and ranted about his father, wife, family, country etc. My main issue comes from the fact that a concerning amount of people are defending/agreeing with them and I’ve noticed there’s a trend of this along with other examples of them popping into the woodwork with these type of communities. So does anybody know why they’re there?