so, it is your button settings. But if you don't like these games, just don't bother playing it.
Many people love these type of games for many reasons. There are also crappy ps1 style games out there but that's a different topic.
1. AAA games now-a-days are a terrible business, they look good but the content is mostly crap or incomplete which was almost never the case in the 90s and early 2000s. People loved that era just because of that. Games were good and the graphics were evolving.
2. if the game's image is vague, not all too sharp, your imagination fills up what it can not see, this creates a way better experience. Same with pixel-art. Same with a black-white movie where after a while you might start to see colors just because you can imagine the colors (you don't literally see it).
3. This game follows all the limitations as correctly as possible an even runs on the cheapest and oldest shit PC on the market just because of that. Probably one of the only 3D games that will be possible to play on anything in the year 2020-2021 and beyond.
But as I said, don't bother playing these games if you don't like it.
I don't know if you actually grew up at that time because there were was even more crap than today. Making games didn't cost that much so pretty much anystudio could publish one and since there was no Internet, we used to pay a lot of money for shitty games. And there was no diffrence between cheap and AAA games, they had the same price tag.
Now, you don't like most of today's AAA games, that a choice altough a lot of them are pretty good, does that mean that you have to make a game shitty for it to be god? Or isn't it that using PS1 graphics as an identity is just convenient for hiding that you are bad at 3d modeling?