Todd Howard says Bethesda won't be remaking the first Fallouts because 'some of the charm of games from that era is a little bit of that age'

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