pretty sure delisted just means you can't purchase it and yeah with the trilogy being out the original versions are being delisted even the original pc version got delisted on steam recently.
R is acting like this version is the best and therefor the only version that should exist I've seen a few complaints about it like low frame rates and some other things like censorship. theres also some debacle about their pc release exclusive to their launcher
can't remember all the details but I read something about VC not having it's licensed songs being removed and still being able to access them and some other things it's also going on for the switch ver(which I don't think they fixed or removed yet)