Discord has good eyes. Indeed many of these decks are illegal based on your rules.
Chrysaoras, Lycanthropes and Devourers have active abilities. Furthermore, contrary to popular belief, Minor Vampires, Phoenixes, Vultures and Dragonflies have active abilities too, even if their abilities cannot be triggered.
When looking at them on a definition level, only those abilities are passive, that show up when you hover over your card during the game (e.g: voodoo). Everything else is an active ability, which can be separated into automatic and activated(triggered) abilities.
Even if the rules meant to say activated abilities instead of active, Chrysaoras, Lycanthropes and Devourers are still illegal. ^^" Sorry.
By the way, my favorite deck of these is the Chrysaora deck. I just happen to love those kind of decks.