I think remasters should be a free upgrade for owners of the original game or at least a minimal-charge option. I do think the label is being overused though.
@Brian_B reminded me how yeah, it used to be we might see a texture upgrade here and there, and then we moved on and it didn't necessarily trigger a remaster release. Metro trilogy, Skyrim (not talking about all the re-releases that came after the texture pack), Shadow of Mordor, and FF were all examples of this along with more that I can't remember. It was a nice bonus when those happened. Occasionally a new build was rolled out, or something similar, again Metro Exodus, the last 2 Tomb Raider games, and then all of the recent Resident Evil games had significant changes years after their first release to update them to newer hardware. If I remember correctly all of those were free for owners of the original games or at least heavily discounted.
Now granted Sony/GG may be planning to also update the character models and animations along with some added features which is a bit more than just a new texture pack. However, should it be considered a full-blown remaster? Probably not and I do agree it's a bit more of a double dip but I still would want them to do it. As I've constantly upgraded my rigs it's nearly always been nice to replay a game and see it take advantage of tech that came out years later but on the flipside you're always going to have opposing views with some who liked it before and some who prefer the new.
I also agree that it's probably wiser for devs to focus more on new projects since most studios have very limited resources but I also feel these days that there's so much going on that it's nice for a fan of a game to feel supported as new tech comes out but it shouldn't always be at the expense of a full-priced new purchase. From RT to now three different upscale methods which then have generational support issues, two UW aspect ratios, HDR and 3-D audio, direct storage or whatever special Intel/AMD/NV/DX related features, and who-knows-what other bells and whistles there is a lot to cover these days for hardware support that people can nitpick over and as consoles get closer to PC it's also becoming more of an issue with newer console launches.