Mice coins 🐁 🤢

Mouse poop. 🐭

I just want to know, does Ocean have a chance at fixing this?

Nope. The larger Ocean gets, and the more it mitigates the effects in its blocks, the more fees it will leave on the table for other pools. And once individual miners are building their own blocks via Stratum V2, I'd expect that many will choose to maximize fees even on Ocean. The incentive to spam-filter isn't the same for miners as it is for SMTP servers.