To solve the spam, maybe he will require and mandate KYC.
I am 100% sure many people wouldn't like to share their personal information to social media owner. Did you remember when that happened in Facebook when Mark Zuckerberg uses the data of the Facebook users? I am still unsure how they will use Dogecoin to solve the spamming problem on Twitter. They will ask users to pay using Dogecoin?
People will surely complain if they will require KYC because most people want privacy and don't want to share their personal information. The worse scenario would be people might switch to another platform if that happens. I guess it would be better if they would fix it without giving their users a responsibility.