One of the instance that is promoted on join-lemmy.org is burggit.moe that is defined as "NSFW & Loli/Shota/Cub friendly". Loli is legally considered as paedophilia in europe and the US, so even if it's legal in the country that host the instance, I would suggest to not promote it as an instance to join
It isn't though. Legally there's nothing to be done about it. Defederation and blocking it from the main list is certainly advisable, though.
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