Don't mean to necro this thread. Was curious to search up and find one existed, so now I figure I can sort of speak my thoughts since Ninjago was brought back from the darkest depths of my mind when a random video hit my suggested;
https://youtube.com/watch?v=QLrSMk5EKHQI stopped watching it after season 10, several years ago I had binged the series up to Possession when I was still in school and then finally finished the OG series some years later. The fact its still running is totally lunacy, seeing it devolve into multiversal and gay (literally) shit doesn't surprise me; its one of those side effects for still running and existing all these years later.
The show will always have ended with season 10 for me, anything after doesn't exist.