I just don't agree that it was a foul though. Clearly VAR, which is usually trigger happy, didn't either. Gary Neville who's a United fan hasn't said he thinks it's one. Let me know that they say at half time (I'll be having a quick dinner), but I can't imagine they'll think it's a foul either.
The argument seems to be that Arsenal do this all the time and nobody else can get away with it. So either Arsenal do it better, in which case good on them and other teams should catch up, or there's some sort of suggestion of a conspiracy, which is mental.