im pretty sure they are not going to demand KYC. As long as you only tip with crypto, KYC is not required. KYC is only required once you are involved in fiat currencies.
Twitter will be hit by its government if there's an issue with its compliance towards KYC/AML. In all exchanges that are catering their users in the US, they're requiring KYC and that's why many have been having issues about it.
But we'll see how Twitter will implement such thing and if there's a concern about KYC. Because I'm sure that they're going to be compliant with the governments rule about it as there's still 'money' involve.