When sceptical people get advised to maybe rethinking following the club or even the sport, get called blind, having hateful agendas, "must be hating the manager" and get mocked in exclusive threads, that can have a radicalizing effect on some people.
And while I agree with your observation, I am sure you are aware that it applies on both sides and therefor the most enthusiastic Ole-Fans will obviously have adjusted their value framework accordingly as well. Look at some of the "ratings" Poch got the relevant threads because of his 6month of Paris, just because he was thought to be a possible candidate.
How often have we read and heard, "that the season is good and might be very good when the trophy is won... shortly after the final we were reminded, that its just 90min of football plus penalties where "obviously anything can happen".
Overreactions breed overreactions.
Lets see what happens next season. Given that Spurs might get Conte, this will even make the competition more unpredictable. Lets face it, during the summer, I can't see anything to happen, that "objectively" will change the managers public image plainly because he doesn't do anything. Unless he gets caught drunk on holiday of course ^^