Not so sure about that pirate game, but I've never played it
Anyhow, there are too many things entangled confusingly here:
- those games had excellent graphics for their time;
- nonetheless, it is true that they hold up remarkably well today, whereas plenty of other games with far more sophisticated graphics don't manage to hold up even five years later;
- so there isn't a problem with using cutting-edge graphics, but there is a problem with so many games using their graphical "wow" as their sole selling point, which will tend to fade away and leave nothing behind;
- therefore, we can say: shiny graphics are the hook to get the player interested sometimes, but have very little to do with the game's longevity and ultimate value;
- so I partly agree, but it isn't that these games are ugly -- it's that their gameplay held up until they became relatively ugly compared to today's tech, which is a testament to their remarkable staying power, due to their gameplay