I was expecting to read a load of nonsense, and assumed you’d posted that link for everyone to have a laugh at and to feel smug in your intellectual superiority.
But, many of the posts over there - in that Utd thread - are balanced and objective, and self-critical, and not at all within the stereotype of fans of PL teams being arrogant and delusional.
To be fair, UK based Utd supporters, and especially those from Manchester, are amongst the most reasonable and observant of the top 6 clubs’ fans.