You can still run Fallout 1 and 2 on modern hardware. Maybe not the original disks, but a remake wouldn’t fix that anyways.
A remake would involve redoing nearly everything in the base game in a new engine. You’re likely thinking of a remaster, which brings it up to modern hardware without rebuilding the whole thing.
A remake isn’t needed for fallout 1 or 2
Well, the first time they e really gotten away from that dynasty has been Acolyte. Haven’t seen it yet, but judging by the discourse online this might be the last time they ever explore outside the skywalkers