Earlier quoted context omitted.
Are you suggesting to get a Gmail account, turn on the setting that makes Twitter email you notifications, mark tweets as spam in Gmail, and then use Google's spam detection as an existence proof of a solution if it's successful?
No, he's saying people by-and-large can't defeat Gmail's spam detection. The same will likely happen at twitter.
It took them years to let users upload images (when there was a clear demand and parasite services grew out of this) and there's obvious spam accounts that could've shadow banned with very simple heuristics.
So I don't think this is going to happen.