i thought it was kind of a weird coincidence that all the werewolves in being human were scratched and no one was bitten since i feel like in most werewolf media they get bitten not scratched and then i realized that im pretty sure the implication is that if you got bitten you just straight up DIED. like if a werewolf is attacking you and they manage to bite you then you're just a straight up goner cause you're gonna get totally mauled and bleed out. so it actually makes a lot of sense that all the werewolves on the show were scratched since it's a survivable wound that allows the curse to be passed on.