This is a very personal opinion and I’m not saying that I agree with my own thoughts but Referees can’t win - they either take too long or not long enough, though the Celtic incident was very quick, but he obviously saw what he wanted to see. Similar to the Raya incident, I don’t think it was a clear & obvious error that was considered, but given the magnitude of the decision, the Referees in the West Ham & Celtic games wanted to ensure the correct decision was reached (whether that was the right thing to do is a separate debate). I think many can see the reason for West Ham’s goal being disallowed (even if they disagreed with it because of other things going on at the same/similar time), but more are having trouble with the Celtic incident, especially with the speed of review.