A lot of it is from the fact that a section of posters on here spent ages being condescending pricks to anyone who'd rather Ole be given the chance to finish what he started than to sack him and bring in Poch. Poch, we were told, would immediately have the team play swashbuckling football with a clear plan and we'd easily challenge for the big trophies. Unlike Ole, who's smiling, clueless clown that plays counter-attacking football and relies on moments of individual brilliance to keep him in the job, and anyone who thinks otherwise is deluded.
He went to PSG, after four months he still hasn't managed to put any kind of stamp on the team, they're ironically extremely dependent on moments of individual brilliance, and in today's defeat he showed a staggering level of tactical naïvité.
And, like all things that get over-hyped, people get sick as of it and start wishing it'll go away so they can stop hearing about it. Plenty of people don't actually give a shit about Poch, they're just tired of the same posters popping into threads (or better yet, starting them) to tell us that we made a mistake in not sacking Ole and hiring Poch.