What's the "fix"? What I read is the "fix" is nodes won't broadcast Ordinals and BRC-20 transactions across the network. But can't Ordinals/BRC-20 users merely send their transactions directly to the miners and have them included in their blocks for confirmation?
That's correct but lets first consider how this attack works and why.
Unlike previous spam attacks when a centralized entity has to spend money out of pocket create large number of transactions paying increasing amount of fee to clog the network, this time it is regular users who are brainwashed into thinking what they are buying is an NFT token so they spam the chain themselves.
If these abusive transactions become non-standard (nodes stop relaying them) it could potentially eliminate a large number of attackers (aka the regular brainwashed newbies I mentioned above) because for starters they don't even know how to use bitcoin. Additionally any kind of workaround with extra steps where they have to contact a miner covertly and have them mine their transaction is too complicated for them. Not to mention that it would be possible that the pool demands extra payments (fiat payment paid separately to the pool owner).
This is my speculation but I'd say it has a good chance.