Totally agree
Surely nobody would mine that? Most people have some sort of ID on them anyway, and if you know. And there aren't that many, so as people have said before, f they go in one of two allocated turnstiles, wouldn't take that long.
Given they're only paying £9, I can't see anyone minding a few extra checks - that way they are more likely to get tickets for other games too, if they are used as intended.
Makes me so sick when you hear stories of them touted to tourists etc.