There's been a rapid rise of 'self entitlement' in the last few years, not just at Sunderland but in general.
People pay to go to a football match, like any other form of entertainment, but believe they're entitled to demand statements on every subject, the removal of someone who's invested millions, sackings of anyone who's annoyed them, etc etc etc. I've absolutely no problem with criticism, frustration or even anger but some of this current hysteria is based on little but fanzine gossip and misinformation. Anything positive is immediately shrugged off as the opinion of gullible rose tinted happy clappers whereas any negative rumours are seized upon as genuine on the 'no smoke without fire' basis.
Blind faith is ridiculed, perhaps justly ... blind prejudice is much worse imo.