It's not, and I haven't. And I'll prove it.
When he FIRST came onto the pro wrestling scene everyone was on board with it. He was fresh off The Longest Yard and people were digging him. He could actually walk to the ring without looking like he was about to trip over his own dick.
People want to pretend that Khali has been a running joke since day 1 and it's nonsense. I'm not saying the guy was an all world athlete by any means. But with his size and look he was more than formidable. He was a solid monster heel. An all time great? of course not. but people act like he was dog sh*t. Obviously later in his career he became dog sh*t. They tried to give him mic time, and stupid gimmicks and he is basically immobile at this point. Now he's a joke. but back in ~2006 he was pretty nice. He had a slick ass big boot.
Check out his matches with Taker, Cena or HHH. They were most definitely watchable.