I don't think either represent a true "paradigm shift," because the implication there is that it would somehow fundamentally change the way we play/experience games, and examples of that are pretty rare (HD, the analog stick). Maybe the super-fast/invisible load times from SSDs will reach that level of impact—jury's still out—but I don't think haptic feedback or adaptive triggers will.
That said, I think it's safe to say that haptic feedback is here to stay and not just a fad, since it's present in 2 out of 3 of the next/current gen systems, which should (hopefully) incentivize more developers to use it. (You'd think this would be especially true of Japanese titles, indies, and AA games that are targeting both the Switch and PS5. Not sure about AAAs, since the vast majority of those presumably will be skipping the Switch.)
I have no idea what the fate of adaptive triggers will be. Might be dependent on how dominant the PS5 is in the market (which is very much an open question, I think) and how many first party games find a compelling way to use them.