Quickly changed the nature and characteristics of the main characters from the 80s. Does not follow the 80's cartoon as a sequel. Having the same characters and similar look doesn't make it a continuation.
For example, in the original 80's cartoon Teela had struggles with being left out of big secrets and plans but seemed to handle it well enough but in this version she quickly gave up on everything she ever believed in and threw all of her experiences out the door and hated everyone around her because she was not let in on the secret of Grayskull. She quickly became a victim and hated everyone she thought was trying to hurt or hide things from her.
Another example was King Randor, who was composed and wise in most situations in the 80s but is short tempered and impulsive. I could go on about the villains and their quick change to forming a cult and things getting weird and with some of them being killed.
But the change that bothered me the most is the change in He-man, even though he was only part of the first episode and five or so minutes and then came back later in the episodes. in the original 80s cartoon he was asked by Teela why he saved Merman and he said, "Every life is worth saving, even if it is an evil life." and there was an episode where he was going to quit being He-man because he accidentally killed a man, but later learned it was Skeltor faking to be killed so he would quit. He-man runs his sword through the gut of Skeletor, very much against his commitment and nature. It is a shame how many are killed within the first episode and the claim that it left off where the 80's cartoon left off (some not really dead, like He-man and Skeletor). False claim.
My children loved the 80's and the 2002 origins, but this one was not like by any of my children and turned it off after 2 episodes (I watched all 5 but regreted it), we tried to like it. I have collected every action figure from the 80's many in the original boxes, so our family is deeply invested in He-man (and She-ra).
I am a girl and did not like that it tried to go toward what Hollywood thinks we ought to think about girl power, just create something else without ruining what is loved by many already. They ruined She-ra don't do it to He-man too. I didn't mind following the story of another character, the 80s did that on OCCASION, but never felt like it minimized He-man or Adam or left the story of He-man for such a long time.