I totally agree with your opinion on this. I've also met top people not at the same level as you have, but they were also jerks. Then, you have the other scenario when you met a successfull person and it turns out that the person is nice, kind and also funny. That makes you come down to earth and become less narcisist :)
Well my posts picked a few people. but it should not be taken into consideration for everybody :) of course, there are humble people and kind.