Right, even Binance doesn’t allow to use multiple account at the same time from the same ip. So there are no way to think they will be tolerate if who using fake information. Undoubtedly for that Binance will go to restrict for such users accounts due to violating their rules and regulation. I think who have make sense then will never use false things in KYC.
People can request for sub accounts if they meet the requirement, I have not bothered about this before though. But I have not noticed on binance that two account s with one ID verification can not be verified, but this will not even make any sense, better to go for sun account which binance made difficult other than many other exchanges that you can open sub account easily. Using false KYC will be highly inappropriate but the OP is not talking about using fake KYC.