"You should never remove hairs from above your eyebrow"
TRUE - You should not do this simply because you can't see what you are doing. In terms of tapering the brows shapes symmetrically. But that is not to say that no one should work on the top line. A brow technicician can see both brows n symmetry and can clean off harsh high points and eliminate unwanted shadows.

"It's okay to cut or trim exra long or extra curly eyebrow hairs."
FALSE -

"Except in rare cases, cutting brow hairs is a lazy technicians trick to temporarily mask a problem"
TRUE - because those same hairs are also frequently extra course, cutting them usually only succeeds in making them the same length as the rest of the brow. Whereas, careful tweezing correctly done can (over time) blend that hair into the overall shape even if it is still longer or curlier than the rest of the eyebrow hairs.

"Waxing or tweezing will make the hairs grow back thicker, darker, faster, & coarser."
FALSE - If this were true, baldness would be a thing of the past.