Thing is votes are federated. if someone makes an instance and farms votes by making bots on same instance, only instance owner has info about IPs. Every other instance thinks the votes are legit.
It is not the problem of my instance per se. It is a problem for all instances because everyone has to agree to instance terms but they kind of are agreeing to all instances' terms.
Ahh! Russia! Global Warming! The libs! Immigrants!