They don’t care about some paltry affairs

It’s quid pro quo sexual harassment.

It's not about the sex. It's about the judgement shown in cheating with a Chinese spy and a direct report, specifically. It's the lack of trustworthiness shown by someone who is willing to cheat in their marriage (presumably they are then fine lying to their company). And finally it's about exporting gpus to China illegally.

This isn't just a case of some extramarital sex.

Cheating in private is up to you.

Cheating with your direct report leaves you open to blackmail.

Cheating with your fucking customer leaves you open to a whole bunch more trouble.

Sure, but what about the relevant accusations?

Could 75% of CEOs in the US help foreign intelligence assets to evade export controls and not face consequences?

I think the whole "selling chips to a country we have an export ban with" thing might be more of their concern.