Someone said :
Presumably you're saying that because Pavarotti was popular he was automatically dismissed by opera purists. That's not true. It's his inability to sing in character and his lack of range that will result in his failure to rank among the greats.
No I am not saying that. Firstly I do not think he has been dismissed. I have not heard many criticisms of him apart from that critic you posted.
You seem to be criticising him for having a distinctive voice but isn't that exactly what Callas has?
Personally, I only have one of his recordings (Madame Butterfly), and I think he is an excellent Pinkerton although I bought it to hear Freni's Butterfly. I can't say anything about his limited repertoire but have heard great things about his Donizetti performances.
So I think it is far from generally accepted that he will not be remembered in the future.