Didn't even watch the trailers did you? I saw plenty of He-Man in there. Also, I think it's inspired for Prince Adam to be a shrimpy little dude, his secret identity in the old cartoon was even more poorly hidden than Clark Kent's with his spectacles.
As far as "butch Teela" is concerned, there's nothing wrong with Teela kicking ass just as hard as He-Man and if you think there is I don't know what to tell you. It's 2021. Women kick ass now. Get used to it.
Again, it's 2021. Eventually the people who sign the checks realized that there's a whole lot of audience besides little boys (and little boys in 40 year old bodies), and catering exclusively to them limits how big you can be and how much money you can make. Decisions that have the potential to widen the audience are going to be par for the course for these nostalgia trips more often than not, I'd expect. They aren't doing this show just to get our nostalgia clicks. After the success of the new She-Ra they're definitely counting on us getting a whole new generation of kids hooked, and they're not just after the boys. It makes perfect sense to put a strong female character with her own motivations front and center with He-Man.
I watched the hell out of that cartoon as a kid, and frankly I mostly just remember spending the whole episode waiting for He-Man to show up and kick Skeletor's ass because no one else could. I think it will be awesome to have other character's who can do things and be rad without leaning on a He-Man shaped crutch all the time.