@Oldvatr I'm a Taylor advocate but like you I can pick holes in his work.
Before ReTune, before Direct, we had Counterpoint, published back in 2012.
https://eprints.ncl.ac.uk/file_store/production/175328/FA1F5CAA-078D-4CDB-8DC3-49CE08B40C72.pdf
This was the one & only time he ever submitted his successful candidates to a 75g OGTT post remission.
View attachment 57687
I don't know how you could judge these candidates as being in remission, 10.3 @ 2 hours on the gold standard 75g OGTT is very very prediabetic.
No record of where they were @ 1 hour either, perhaps there was no lab draw, perhaps he didn't see fit to publish.
Either way he never repeated this test on any of his follow up studies.