I do mid-range raid healing. Nothing mythic, and heroic is still a challenge.
With that in mind, I get complemented on my healing. My presence and tactics are regularly the difference between success and a wipe.
.. but people don't understand what healing is, what the numbers mean, and what "good" means.
While I'm pleased to get complements, especially from other healers, I don't think many people understand what's going on.. even other healers. Their complement is somewhat meaningless, and for another healer to complement me worries me that they think less of themselves.