When I took Yoga teacher training, one of the things that came up was the idea of "what is meditation"? From reading the Yoga Sutras by Patanjali, the answer was that meditation is an unbroken stream of awareness.

I like this answer, because it doesn't mean there is a right or wrong way to meditate. Anything that you do to perceive an unbroken stream of awareness can be considered meditation.

In that regard, the ego can be a part of meditation. It can claim to be what is meditating. And in some ways it would be right, but only so long as there is a realization that you are not only your ego.