I honestly disagree, I think the game is fine as is. You just need a few minutes to study the lanterns(took me around 2-3 mins to get a hang of it). Most of the jumps were designed to be hit by simply forward jumping and hitting the down+light attack in a rhythm. The lantern parkour at the end of the timed section was probably the 'worst' I'd say but like every other lantern part in the game, it's just about getting a rhythm, just get a feel for it you know?
Also comparing the boss to the lanterns doesn't really say anything. Saying the boss was too easy is an understatement, she only had one attack which can be dodged by JUST walking.