There aren't enough towels in the world to stop the sewage flowing from his mouth

Staying in one place is the best path to be taken over and surpassed by many

I think you're trying to convey the idea that someone's negative comments are overwhelming and can't be stopped, like a flood of sewage.

This analogy is a scathing critique of the current state of the crypto market.

Sounds like someone needs a plumber for their verbal sewage overflow.

I think there's a market correction needed here, as this statement is a gross oversell of the situation.