I really haven't had any issues on the two I mod, but they're pretty small communities. And honestly, at Lemmy's scale, if you're feeling the need to use tools, you're probably moderating too strictly, or you're moderating a massive community.
Are there any stats to suggest that? I don't mean in a "prove it or gtfo" kind of way but I maintain a community for the Pulsar text editor on lemmy.ml (back before it was cool /hipster) when there weren't really any other (popular) instances. We have no political ideology (as a group, not speaking for individuals within it) and it is meant to be a Fediverse alternative to our Subreddit for discussion and support. The last thing I want is for people to not have access to it because instances are blocking it or people are shying away from lemmy.ml in general.