This is 100% true, except that the incentive is to still use witness data because there is a discount.

Of course we would prefer this replace the other method if that was expected. But I think the claim that they will switch to using OP_RETURN and pay higher fees is just unlikely. I think we keep the exact same number of people using the witness to store data on chain, plus another market of people storing it in OP_RETURN.

That’s just a deduction based on incentives so maybe I’m wrong, but I keep hearing people say “this is better so we want them to switch to this,” but I can’t come up with a reason they would, especially when taproot wizards have been very explicit about trying to be as poor stewards of the chain as possible, on purpose. They created an even worse way for no reason at all and used that as well.