It’s not something I feel super passionate about even though it’s appealing to smooth over the ST’s rocky terrain when possible and unintrusive.
This doesn’t really smooth over the trilogy, it smooths over TLJ and a series of comics, TROS doesn’t offer an alternative explanation for the KoR’s origins so to someone that only watches the movies there’s no contradiction. They might come off assuming the KoR were once Luke’s students but I don’t see the issue with that, if anything it would help make the KoR feel less bland and pointless in TROS for them. Sure they might go on Wookiepedia, learn of the ‘canon’ explanation and think “well that sucks”, but that’s true of a lot of the ‘canon’ we pick and choose to ignore, such as the caretakers on Ach-to or the Death Star cannons of the Sith Fleet.