Well I'm still trying to wrap my head around the idea of federation but initially I imagine an instance could just not federate with an instance that doesn't use captcha/email verification during signup but my confusion is wondering if like there is a transitive trust in the fediverse. Like Lemmy.1 trusts Lemmy.2 and Lemmy.1 does not trust lemmy.3 but Lemmy.2 DOES trust lemmy.3... can bots from Lemmy.3 post on Lemmy.2 which will then be federated to Lemmy.1? Sorry, that seems super confusing as I type it out but it's the best way I can describe it.