Originally Posted by
Robanker
I can't speak for others but the animation, at a glance or still image, looks cheap. Overly simplified designs based on block-shaped design theory does tell a lot of western audiences "this is for children" so it didn't help itself. You could argue BTAS does the same, but traditional animation translates that better than CGI, which if you don't have a lot of light sources and such can look very unappealing visually.
For me, the show just didn't pop when I saw stills so I just kept putting off watching it until I eventually forgot about it. I hear lots of praise for it so I'm going to start a watch-through of it soon.