I think this was the transition point. Adora gets introduced, and He-man has his last hoorah as the hero:
It’s was more or less all downhill for He-man after this fight sequence with the Horde. The last scene was pretty much his swan song, the beginning of the end. From hereafter he keeps getting captured, knocked out, and in constant need of rescue.
But they made those characters cartoony-looking. They were not made to be turned into action figures.
The characters in the Filmation She-ra show were designed with more realistic proportions. They were specifically drawn to sell the toys. I would rather have figures that were modeled and sculpted in that style, which we got with Masters of the Universe Classics.
I felt so sad and sorry for Skeletor (cued to 3:55):
That creature laughing off all their powers was distressing.
Then the creature got mad at the Sorceress and just hypnotized and took total control of her and Castle Grayskull with such ease (cued to 12:30):
That was so scary. I couldn’t stop thinking, obsessing about what that creature did to the Sorceress. I felt like crying. My mind went to some dark places. I mean he could have done anything he wanted with her.
Note: I had the same sort of feeling when Jabba the Hutt coiled himself around Princess Leia in her gold bikini.