New accounts creating communities en masse

I don't think there's a LemmyNSFW Meta to talk about possible issues in the instance, but lately I've noticed a few - possibly bot? - accounts spamming communities. They both have jumbled usernames and have created around a dozen communities each.

I don't necessarily understand what's the point, or what they could gain from this, but thought it'd be worth to at least point out to the mod coordination.

The accounts are @0D5C3D7BD3F7D503 and @0FAC249F80845370

Mildly unrelated but I've also noticed @Think316 has dozen of communities dedicated to different brazilian celebrities, but in this case I think they're just not very bright.