There is a big difference between ego and narcissism. Many people have low self-esteem, which means that they are constantly doubting themselves, feeling less worthy than others, feeling destined for failure, feeling too timid to take reasonable risks, etc. Meditation helps to restore correct ego functioning in humans, creating a balanced perspective where the self can thrive and does not inflict self-harm by allowin…
This mode of thinking is echoed in some Stoicism books I've read. Both "Meditations", and "A guide to the good life" include similar entries.
I really enjoy seeing the parallels between western(?) Meditation/mindfulness practice, and Stoicism. I do believe the meditation we predominantly practice in the west is at least slightly different from the more traditional eastern Buddhist meditation practice. But I do believe that is to be expected, the cultures are fairly different so the adaptation process was bound to create some offshoots.
There was a submission a while ago[0] that I believe does a great job of summarizing some of the cultural changes that meditation practice went through in the west, and how it contrasts to the more traditional eastern practice.