'feeling that what people are earning is nobody's business' a 'feelz' too?

Absolutely not. It's called the Non-Aggression-Principle. It's a natural right and an axiom. One's right to swing his stick stops at the other person's nose. Period.

I recommend reading https://www.goodreads.com/author/quotes/89275.Fr_d_ric_Bastiat
https://www.goodreads.com/author/quotes/46766.Ludwig_von_Mises
If you are willing to read at least the quotes in those links, it'll save me a lot of time.