A game can look good and be completely outdated on the technical front. The first Kingdom Hearts on PS2 is completely obsolete on a technical level. And yet, it still manages to be visually pleasing nowadays. Wind Waker is nothing compared to BotW on the tech front, but WW still looks good today. This happens even with more realistic looking games: Resident Evil 4 poligons, textures and shadows are a joke compared to the more modern Village, but that doesn't mean RE 4 looks bad. It looks dated, but not bad. There's a difference.
Scarlett and Purple definetly look dated, or at the very least, a few steps under what other games accomplished on the same system (Monster Hunter Stories 2, Dragon Quest XI S, Xenoblade Chronicles...). They suffer from a somewhat low resolution (720p maybe?) and no AA, some textures are not very detailed and draw distance doesn't seem specially great. But the game is colorful, the art style is very coherent and while dated, the overall look of the game is very nice (albeit not stellar).
