I'm not sure I understand this game.
I'm sure someone would want me to bring up the PS1 version, so let me say that the games look about the same, but PS2 definitely has bloat that's kind of inoffensive to me, and some long load times. So that aside...

This game makes me confused as to what some developers thought a platformer should be back in the day. I kinda like the feel of the game, Rayman has a nice jump. But there's weird parts where there's just silence, and it's deafening (I appreciate it's trying to be a dynamic soundtrack in general, but it's weird.).

The platforming is really straight forward.... You don't want to glide much because it's slow, but the game makes you glide more as it goes. Jumps aren't threatening. You have a lot of health. Your monkey-bar climbing is slow. The swinging is cool but the game doesn't demand a lot...

You need to do plodding tasks like carry balls and barrels around. You need to walk with and escort Clark and Glowbox. The combat is really mediocre. Destructible things (or even cages) don't really stick out much visually.
I hate controlling the Walking Missile, with its shallow, delayed jump and weird collision, and I hate taming it to do it all over again. The swimming isn't really much. I don't get why we're fighting Pirates, of all things...

The game is a collectible nightmare, since you need to do whole level over if you really wanted those few lums you missed, which you might've definitely missed while riding a missile or going on a slide (I didn't have a compulsion to do this, but I did a few times)...

And then it was the Sanctuary of Earth and Fire that really made me give up.
The plum is a neat idea. But it's also another barrel/orb... and I'm just standing there shooting... So I can move this thing... and it's not really going as fast as I'd like...... And the level is really really long. And then we get to the slide and I'm trying to steer this stupid thing at speeds, that on the other hand, it shouldn't achieve when it's asking you to avoid insta-kill lava and ride walls to get lums...

I was just kinda done with it. And I'm kind of left wondering what part of the game was supposed to really be fun. What it was going for, exactly. It wasn't that bad though, I guess. I feel like I'm not really the right person to judge this game, in a way.