Regardless, saying lightning will solve everything isn't a solution. We're dealing with a fundamental issue on the L1 level.
I don't believe the Ordinal fans will ever want to switch to L2, because the subjective value of Ordinals come from the fact that they are stamped into a ledger that cannot be counterfeit. That's probably why they haven't moved onto sidechains (which would be much easier than lightning).
There's difference between invalid and non-standard.
Do you really believe that the miners will care about standardness when it comes to $50 million? Additional Ordinal software can be developed that sends transaction directly to mining pools, and by the way, that's worse because now we have less accurate estimation of the current transaction fees.