The announcement of a ThunderCats movie from Godzilla vs.The fact that the Teen Titans Go! Fake Crossover claimed that " nobody cares about 2011 Lion-O" doesn't help. Especially due to the huge change in tone and the 2011 series being Cut Short.
Even when this show was merely announced, fans of the former were quick to jump at its throat for being another reboot of the same property instead of being a continuation. When the show isnt straight up using music from the original series, the show extensively remixes the score from the original '85 cartoon, including all the character leitmotifs and background music, in a way that updates them while staying very faithful.
Awesome Art: While the character designs were a source of controversy, the animation itself is very fluid, particularly in its action scenes.