I waited a long time to finally put my hands on this game, and good lord did it not disappoint. This really is the best direction HAL could've taken for Kirby's transition to full 3D, controlling Kirby the entire game just feels so natural and responsive, and the camera angle choices aid to that panoramic feel of a level quite a lot, also Kirby can now parry and it's pure GAS.
Even though the game never feels challenging (except for the third Arena tournament), the game shows a good balance in difficulty between worlds, with no steep difficulty curves to only let you focus on having more of a relaxing and fun time rather than a tedious one, which is what Kirby has been more of as a series. Even the bosses follow this rule while also compensating with interesting character designs and very varied movesets.
In terms of content, Forgotten Land offers a very wide variety of it, sometimes in a chain reaction fashion: The imprisoned Waddle Dees you save on every level are sent to a little town they help to construct, giving you access to additional stuff you can interact with like a Restaurant, a pond for fishing, and even a workshop to upgrade your copy abilities, and it's amazing to me because of how well executed and cute it all is. There are also portals to obtain rare stones for the worshop, hidden tasks to save more of the Waddle Dees and even more levels after you beat the main game!

To summarize on a humorous note, this game made me realize that in order to make your platformer good, there is two key components you gotta include: an extremely banger soundtrack and an unlockable little fishing mini-game 🐟
Kirby and the Forgotten Land has both.