No one is 'blinded by hate', and Fellaini has had his moments, but football is more than about moments. The cold hard facts are that Manchester United have performed woefully below expectations throughout Fellaini's time here and he's shown little to suggest that he has another level he can go to.
He's not solely responsible for that failure to reach expectations, but he's synonymous with it. I simply can't understand how any United fan can be happy to watch another manager make the same mistakes that his previous two failures made.
I do, however, understand the argument that you should support the players that have put on the shirt and I will do that; I hope he has a good game, but I don't think that means you shouldn't question or should blindly accept whats happening at the club and I suspect the fact that some are happy with Fellaini's contribution does reflect how low standards have fallen here.
No the reason it's annoying is because you literally could use the argument for absolutely anything on the forum. If thats what you believe then A) why does this site exist and B) why on earth have you posted nearly 4000 times on a forum discussing football if you are of the opinion that you can't discuss football?