https://www.youtube.com/watch?v=iyn2NeA6hI0
Can you please point at the mentioned effects here? Immersion in what? Looks like PS4-gen Tomb Raider to me, honestly. All these water reflections existed long before RTX, it didn't introduce reflective surfaces. What it did introduce is dynamic reflections/ambience, which are a very specific thing to be found in the videos above.
does improve immersion and feels nice to look at
I bet that this is purely synthetic because RTX gets pushed down the players throat by not implementing any RTX-off graphics at all.