I think they should show the VAR officials a maximum of 3 (or so) replays. If you have to watch more than that many replays then it's clearly not an obvious error
Actually watching it again he doesn't even look at the fourth official once. Looks like he's struggling to understand what Howe is saying therefore not paying any attention to the board
I doubt there's anything in this. I mean, if he really did want to get booked, there must have been ample opportunity to scythe somebody down during the game.
But this does seem a little...strange