I think the big thing was it was a 'not so subtle' cameo and people missed what was happening in the scene and paid too much attention to him. Other cameos have been more subtler than that and weren't really distracting. He was lovely but I'll admit I missed what was going on because of it (like Arya looking at the sword and I still have no idea why) .What I keep hearing is that people liked the show because they didn't really know the actors and could really get absorbed into it and when you have a cameo like that it breaks the mystic of the show.
Don't know why I got downvoted for literally saying what everyone else on the internet is saying about why they didn't like him on the show XD I found it jarring but I'm not going to go and belittle him on twitter that is extremely uncalled for. I want him to make a full length version of what he sung and put it on youtube because damn it was lovely!
It didn't distract me at all if people can't pay attention it's their own damn faults. I was just like "wait I recognize that voice.... And that face. This is a thing, kay" and that didn't really disrupt the show at all it was just part of it but the show itself is too engaging for me to really care when my favorites are being shown
I think the singing part was rather pleasing
Why do people have to throw so much hate at him