I don't always agree with Herlock on matters audio, but I happen to be with him 100% here! Although I suspect there could be debate about whether even the best ADC is 100% perfect. But in practice, every turntable, arm, cartridge, phono preamp is different and will produce different sound, and that will swamp likely differences in ADC quality.
(Incidentally - and I don't think Herlock will be interested in this - I asked Guy why there has been no hi res digital release of the new album. He said 'good question' and he'll look into it.)