Never played a kirby game, so im talking out of turn, but...why would a company make a game that short and charge triple a retail? Make the game as long as the main story in mario or kingdom battle, etc. Or charge 30 or 40. Its a bad look for the company.
For what it is, it is a great game. What it is being a game geared towards children. I play it with my 5 year old, not by myself. Definitely not a “gamer” game.