Well, imagine playing the originals. There was no online play, tournaments weren't easily accessible, so this was pretty much the only form of competitive pokemon people had. And there was a huge amount of content, 14 symbols to collect for 2 levels of challenges against the brains, unlockable items, varied styles of battling, literally hours of replayable content. It was exciting at the time just to imagine the Battle Frontier with the phsyical/special split, not even the added pokemon and 3d models.
Then you go play the game, find a confusing "The Battle Froniter project has started!"(it hasn't), and get told by the game creators they didn't think anyone would give a shit.
Not really sure how you can call ORAS a good remake when it arbitrarily took out a huge amount of the original game that people loved seemingly for no reason except the devs didn't want to remake it. Like, you can enjoy it for what it is, but it arguably doesn't even fulfill the purpose of a remake.