He was! But he overused the harpsichord, in my very humble and unfounded opinion, and it hurts my ears to listen to a lot of his creation. I get why he did (the piano was still a very new creation, and the harpsichord could be more easily heard in concert halls), but it sure does pierce the eardrum these days.
I do love a lot of his music. It’s just difficult to hear the shrill of the harpsichord, for me.