The pub would definitely have been annoyed about how it was all going off in there - tons of Wolves singing, all football fans in there and some clowns outside acting like ADHD kids (what can you do), but that isn't their Saturday night vibe at all and they have a long standing clientele who don't want that. We've all normally buggered off by 7-8ish as it gets too loud in there anyway and most of us have homes to go to in any case. This time they probably had to forcibly say "no, the football lot need to get moving soon enough, don't serve them any more". Which is a pain in the arse if you're the one being told "you can't come in" or "we aren't serving you" but fuck it, it's their pub, their rules. Just leave then.
Personally I've never had a problem in there, never been refused a drink, never been told I need to go and I've been there long after 8pm on more than one occasion, but then I tend to be "generic man with solid hair game standing in corner in a coat having a chat" which stands out a lot less than "cloaked in Wolves gear bellowing out inaccurate chants about Wolves playing five at the back or Ivan Cavaleiro never giving the ball away".