You really think so? Because I think it was, for me, the definition of "standard/nothing special platforming". (Which is a shame, because it was the world I was looking forward to the most pre-release). While every chapter before this managed to integrate the platforming challenges nicely with the 'story', making it always feel fresh since you were always doing different stuff (Ch. 2 is the master of this, I'd say), in here, most of the 'areas' are "long cutscene to get to it that gets old after the third time, basic platforming upwards through boring bridges and rocks, activate a horn at the top, go to another area, rinse and repeat.
Maybe they'll throw a gimmick here and there like tightropes, or the cats that steal your stuff, or using the Dweller's Mask to make some platforms appear, but you can find repeats of even those challenges, and it never gets past the basic stuff. Even the 'final areas' of each of the path feel underwhelming because of that: they introduce some cool mechanics in the Twilight Bell, but as soon as it gets more engaging, it's over. The Windmill is a solid platforming section, but as soon as you start weaving in and out of it, it's over. The Bird Cage's highlight is bouncing on that big bird at the end and then shushing the hourglass to not wake it up, because the rest is also pretty standard fare. And the Lava Cake looks cool, but it's basically only 'sinking platforms' - which are an easy challenge already, and are made downright trivial with the time cap. (which is not even really used outside of two button puzzles)
Then you add that you need to backtrack through areas you've already been through and through the long rope segments again for the Time Rifts and for reaching each area of the "big finale" (which is also a pretty underwhelming final boss for the area), and everything was just kinda "been there, done that" after finishing the second island. I really wish I could have liked it, because the theming is beautiful and the ideas behind the areas are great, but in the end it was just a chore to get through it, made more clear to me based on how I feel it doesn't even have 20% of the character of the other areas at the end of it. (And how the character there is even less integrated into the platforming challenges). I'd easily trade Ch. 4 for an expanded version of Queen Vanessa's Manor, haha. (or at least, I'd make it a smaller chapter just with the 'end areas' and remove basically all the cliffs in between.)
The Twilight Bell is the best section, though, for sure! It's just a shame it ended right after I thought it started getting really good.