That's weird, usually people claim the opposite. Perhaps perceiving having less of an ego is actually a symptom of having a huge ego. I wouldn't know; I've barely got an ego at all.
Meditation has boosted my ego, in some meanings of the word, and given me a sense of self worth. It's also taught me that everyone is interconnected and self is an illusion. Those two things go hands in hand to make me much more generous and giving than I used to be.... Still no saint though.
I think people lack the language or don't realize the two concepts of self-worth and non-self are sperate. The word ego just gets thrown around. "Oh yeah I have a tiny ego but great self esteem." == "I have a strong view of non-self and a huge ego."