They put He Man front and centre for all of the advertisement and then did that in the very first fecking episode. Why wouldn’t MOTU fans be pissed?
The very first description of the series was this:
"A radical return to Eternia, REVELATION is a direct sequel series to the classic era of MASTERS OF THE UNIVERSE. Featuring fan favorites He-Man, Orko, Cringer, and Man-At-Arms, the story pits our heroic warriors and guardians of Castle Grayskull against Skeletor, Evil-Lyn, Beast Man and the vile legions of Snake Mountain!
It added, “But after a ferocious final battle forever fractures Eternia, it’s up to Teela to solve the mystery of the missing Sword of Power in a race against time to prevent the end of the Universe! Her journey will uncover the secrets of Grayskull at last. This is the epic He-Man and the Masters of the Universe saga fans have waited 35 years to see!”
In May, back when the trailer came out, the description made it even more obvious what the focus was:
“After a cataclysmic battle between He-Man and Skeletor, Eternia is fractured and the Guardians of Grayskull are scattered. And after decades of secrets tore them apart, it’s up to Teela to reunite the broken band of heroes, and solve the mystery of the missing Sword of Power in a race against time to restore Eternia and prevent the end of the universe.”
They released 20 images, of which He-Man was in about a quarter of them and he was hardly in the trailer either.
What were these people expecting? It's not like it's even called "He-Man" any more.