They cant. They can only filter words. I did a video https://youtu.be/W2jxDVlnBpk
What IOHK can do is make similar video and use YouTube ads to show on Cardano related keywords.
Search volume isn’t too big wouldn’t cost much. It would show on top of every search before this pile of s*it.
As I wrote in article scammers are sure to apply this to other cryptos, QR code thing is scary.