What can even be controversial about the 2021 Olympics? IIRC Pogacar didn't even want to do the time trial
Hauptman left the team afterwards (for reasons I don't know) but he always defended Rog & had a very good relationship with him. I think the calls to drop Roglič for the ITT were mostly coming from armchair Slovenian fans desperate for a gold medal (Pog was seen as a safer bet). After the Olympics I think there was some sort of behind the scenes power tussle & Bahrain's Slovenians took over. Beyond that, I don't know.
We need a book about this stuff.