Still a simpleton. Constantly dishes out pub sayings. Gets angry at journalists over normal questions. Only wants German speaking players since he can't speak English. Criticizes Germany for trying to play technical demanding football like Spain and instead demands we refocus on the old German virtues of fighting hard and giving it all.
And it is a bit ridiculous how he always tries to look grim and wants to show everybody that he's got a no nonsense attitude.
Cologne fans love him exactly because of this but that kind of judgment is why the club is so unprofessional. They rate his 'authenticity' over professionalism when the latter is what they definitely need more
This just reads like you're trying to rationalize your dislike of him.
For example he's a 50 year old, who grew up in the DDR, never played abroad and coached lower leagues until fairly recently. I'd be more surprised if his English skills were great.
I also think focusing on German is not strictly a bad thing for a club like Köln, it's a trade off between size of recruitment pool and easier team building and identification of fans and team with the club. Since they are pretty broke and can't offer European football either they aren't in a position to take their picks from abroad anyway and Germany and it's neighboring countries still provides them with a fairly large pool.
Other than that you're just listing stuff that has little to do with intelligence or professionalism, let alone actual coaching performance.
"He looks grim and isn't friendly enough with the press", seriously?
He gets results, he does so with a distinct / attractive tactical style and he's popular with the media and fans. That's pretty much the holy trinity of being a valuable coach to a club.
Absolutely no one is interested in reading his drivel.