I find him much better because he was assisting Highmountain Chieftains for generations, he was also son of Deathwing, cured from corruption. He did help a lot as a guide, and as someone who acts , be it in the recruitment scenario, in Vol’Jin questline and such. He is first Black dragon who isn’t scheming d-bag, he is using Tauren tribal magic and he got himself integrated into their society but unlike Onyxia, he did it to help them not sabotage them.
I never liked Wrathion and didn’t understand what his purpose was to begin with. But the most aggrevating thing about him was that he was such a know-it-all despite being 1,5 year old (back in MoP).
It’s never explained why he is like that, nor how he got all this wealth.
As for quote, I don’t see anything “cucky” about it. Can you elaborate why do you take well mannered response as such?