> I will happily argue that affair was just an excuse for other reasons. His coverage was not pro-Trump enough.

Well you could, but considering:

1) Zucker's "too much coverage" that was internally complained about was him trying to be pro-Trump, not anti- (regardless of what the then-still-disgraced former President whined about)

2) his resignation came in 2022 while CNN was still largely free of the right-wing pressure campaign it has been under in the last 18 months pre-merger

3) … in the middle of an internal sex scandal investigation involving someone else, in the #MeToo era, when the company was trying to make it very clear that it would not tolerate such things

I think it would be quite a stretch to make your case.

Jeff Zucker was not even fired for the relationship, but for failing to tell the board about it as company rules said he must.

Again: top CEOs do indeed resign over this stuff. Because it is serious: it opens them up to blackmail and opens the company up to lawsuits.