I think you're hitting on something important, skies. If compliments are a response to something happening within the relationship in the room, then it's possible they can work to repair narcissistic injury. But if the compliments address an aspect of what the client feels to be a "false self," then they may feel flattering in the moment, but ultimately feed negative views of the self. They become a way of invalidating, and not "seeing" the client. That would be damaging. What we value in ourselves, and what others value in us, may or may not be the same things. Distinguishing what we value, from what we don't value but should, and from what we have been taught to value at the expense of our true selves is a very tricky thing.