He is right in that:
* Monetizing engagement amplifies the most exciting content
* There is incentive to make exciting disinformation and get paid for it
* So Twitter is packed full of disinformation

But:
* Twitter doesn't have as much gate keeping, it is closer to free speech, and gatekeeping has it's own problems
* We haven't had this much easy-access world-wide free speech before and are not used to it yet
* There is no authorative source for what is credible and trustworthy, so:
* Everybody needs to learn who to trust and who to discount, and stop following liars

Unfortunately, humans prefer to believe what confirms their prior beliefs rather than do that rigorous fact check from time to time in order to curate reputation information and learn who to trust. I don't know how to fix humans.