The videos are pretty nice and I love this kind of stuff so I can't really rant on it too much, but they do often look like some of the less technically or artistically polished PS1 games of that time period. Games like Forsaken, G-Police or Jet Moto were released around that time, which arguably look a lot more visually consistent and polished. The examples are more similar to something like King's Field II, which is a game from '96 but is hardly a looker, and is much closer to what the demakes look like (by comparison, games like Tomb Raider, Krazy Ivan, Alien Trilogy and Destruction Derby 2 were released the same year).