The ego-death experience that meditation usually leads you to also strongly seeds the feeling that other consciousness are "unreachable" and therefore should be left as alone as possible while it reaches it's own enlightenment. I think it's a very narrow view of a richer theory like Jungian individuation.

That being said you can have a non-nihilistic ego-death or medidate only until your more intrusive thoughts "go away" without you loosing your complete identity, that's kind of like a scientific fact. Of course if you get "addicted" to it or start chasing the "ego-death" experience it can be harmful.