It's not shitty. It's just overhyped by nostalgiafags and brain-dead drones who parrot nostaliafags.
The game, when it came out, was somewhat above average, but everyone remembered all the massive issues it had. But then time went on and turns out it was one of the last "big" adventure games, as the genre was upon the release on its last leg.
So now it gets a lot of overblown praise, while being only barely average when it came out.
Fucking Syberia should get the spot, but instead this shit hogs it.