The community getting the worse trolling and attacks would exacerbate their moderators which in turn could result in severe, expeditive moderation.
Do you feel this might be happening ?
I’d say it’s pretty predictable and comes in waves as issues come up.
For example some people from exploding-heads posting rightwing content outside their instance before they were widely defederated.
Another example is when illegal content was being posted in large communities and Lemmy.world started blocking users from posting/commenting using a VPN.
Other than that it’s a lot of knowing your audience.