Hmm, interesting. That quote suggests that they essentially equate Snoke with Palpatine. (And I get that Snoke wasn’t intended to be a meat puppet, but still, I think it’s reasonable for a moviegoing audience to essentially view them as functionally the same given the opening to TROS.)

I think I’m resolved on this now: TFA and TLJ won’t be altered further about this point, but it’d be nifty to augment Kylo’s line to suggest they became a dyad. This (sort of) explains why Palpatine was surprised by this without negating any Snoke mind-bridging or destiny that was already at work prior.