He's clearly emotional and has his own reasons for being particularly passionate on the subject. But, I don't see the need to have a go at Wilder as he's done, because from what I've seen every football team has celebrated in a similar manner. Just look at the Wednesday v Exeter match from last weekend for their celebrations as an example, and that's not meant to be picking on Wednesday either. So he's made it personal there on Wilder and he seems to come out and criticse United and/or Wilder on a regular basis, not sure why either. The other ones I remember was last pre-season when he said we were shambolic or whatever words he used/tin pot etc, because we were relying on Billy Sharp to lead our forward line and Billy Sharp was "League One" quality, despite just having scored 25 goals in the Championship and we'd spent over £40m on other strikers.
Then there was earlier this season when he said we'll be Championship at best, maybe League One over the forthcoming years on the basis of our tin pot attitude again, just because Wilder disagreed with the subs situation with Klopp, again forgetting that there was another 5/6 managers who agreed also.
He does seek attention with his views, I'm fine with that as long as they're constructive, and too often the logic to his thinking is just baffling.