yes
yes
If you send out review copies to YTers with no strings attached (other than a date), then don’t expect them to not show some full pages. Except for one YTer the others did not show more than any TTRPG company other than WotC would have had no issues with.
Even if you agree that the one crossed a line, what exactly do you prevent with this? Don’t you think there are much better quality scans available within a few weeks of the product release?
Pirated copies available later doesn't justify anything. Again I'm not that familiar just trying to understand the issue.