It's amazing the different standard people are held to. There are 35 year old football (soccer) superstars running their mouth on a weekly basis, this is normal. A 20-21 year old cyclist brushes his shoulder after winning or speaks out on a teammate being put in a coma, and he's "a nasty little ***, isn't he?"
So it's not just "athletes" in general but it seems to differ from sport to sport.
And i don't agree with your assessment of waving it away because he's still young. Those guys have generally lived a completely different life from you and me. In Evenepoel's case, even more so, because he lived with strangers for 4 years. Everything revolves about them being athletes, not about them being young, at an early age. Can you imagine what it's like moving to a different family at the age of 11? There was no boyscouts, no lingering on the playground after school to play with your school buddies, no hanging out late at night in bars at 16 or 17. I think these guys had a completely different social life in their forming years, and that means different social skills.
We are currently on a forum with people who likely had a regular upbringing, most of which are much older than 20, and the amount of dumb *** you have to read on a daily basis is staggering. Yet we hold those guys to a higher standard despite their age, despite their (in most cases) limited education. So i do think we should cut those guys some slack, and not put everything under a microscope.