I have to disagree with the assertion. There's actually a disturbing amount of people who defend the Iraq War in polls when asked. Axios-Ispos found 36% approval in March on the twentieth anniversary and it's hovered between the mid-thirties and the low forties ever since 2005 in Pew and Gallup polls.
I don't think the bulk of the Freedom Fries crowd will ever change their view. It does seem almost no historians outside neocons defend invading Iraq anymore, but that is not an opinion reflected by the majority of the GOP.
Damn, I honestly was under the impression that Republicans in the Trump era had pivoted towards running away from the neocons and trying to equate them with the Democrats. Maybe I’ve given them too much credit for ideological coherence.