So the fans who didn't like it are now the lowest common denominator, is that what you're suggesting? It was certainly possible to create a show that was a tribute to the original but pushed it in a new direction without pulling a bait and switch. It was also possible that they could have been clearer and titled the show accordingly from the outset making sure people knew that Teela was the protagonist, not He-Man or Adam.
It definitely didn't help matters that Kevin Smith outright lied to fans and claimed he was a fan from the beginning when I think he would have garnered more respect from them if he said he wasn't a fan as a kid, but became a fan when he got the opportunity to work on the show.
The truth of the matter is, they knew exactly what they were doing.