You just need to understand a big percentage of match goers, they by and large aren’t interested in ‘off the field’ stuff. They just want to ‘get behind the club’.
They see a manager that left for a club in a similar position in the league and they can’t comprehend it over ‘well, he’s greedy, boo, hiss 🐍!’
They don’t put two and two together as to why so many players and managers want to get away, they are just ‘disloyal’.
They furthermore see dissenting chants as also not ‘getting behind the club’, though in reality that is what the dissenters are doing as we are the club and want better for it instead of meekly accepting this regime’s downsizing of it.