It’s not really about fascism. The very intense athletes have rituals and superstitions as well as legitimate health/training regimes that may include refraining from fucking before a game. I mean, fucking will make you tired as hell, so it’s understandable. Parasocial fans want to make sure their favorites have the most advantage. Or perhaps they have $5000 on draft kings in favor of a player and are shitting themselves because said player is exhausted from nutting.
As for the bed thing, those were just speculation and jokes. The olympic village is notorious for being full of sex.