Obv Löw has his warts as a manager (and presumably on his arse), everyone in charge for so long will develop that. He always got over the top hate especially from Bayern fans though imo, since he hasn't deferred to them as much as they liked starting with the Lehmann-Kahn story when he was still assistant. I mean, loads of them absolutely hated his guts for sticking with Klose back when Gomez was banging them in for Bayern. Maybe I've been stuck in defense mode since.
While he is somewhat part of an old boys club with the men's national team, the rotten structures in the FA run wayyyy deeper than that. I'm not sure there's anything like it in sport. It's always been bad but nowadays the DFB is openly spitting on fans and shilling for billionaires. That house needs cleaning up.