Well yes, I see what you mean, but just to clarify two technical details:
1: Remjet-backed Vision3 can be developed in C41 chemistry just the same as the film without the remjet backing. The problem is that regular lines running C41 don't have a provision to remove and contain the remjet material, so it will foul the chemistry and equipment in such a line. However, in a home setting, it's perfectly feasible to remove the remjet from Vision3 film (or leftover Eterna) and run it through C41.
2: The halation is not due to C41 development. It's due to the missing remjet layer, which also serves as an anti-halation layer. Developed in ECN2, e.g. Cinestill film halates just as badly.