Definition sounds reasonable to me, it's broad enough to cover a lot more practices than just sitting still and breathing which is good.

Although I will admit for that me, I don't feel like I am meditating unless I am in a vipassana state, just sitting and focusing on the breath.

Have you ever heard of the book "Mastering The Core Teachings of the Buddha"? Some of your mindset reminds me of the author of that book.