Depending on the blocks Bowser can actually break them with his Fire Breath. this would amount to getting a Cat Shine so that he can leave the world earlier than he should.
Talon Marks • February 18, 2021 • https://www.talonmarks.com/arts-entertainment/2021/02/18/super-mario-3d-world-bowsers-fury-wii-u-masterpiece-amazing-new-experiment-for-mario/attachment/bowswer-jpeg/
Depending on the blocks Bowser can actually break them with his Fire Breath. this would amount to getting a Cat Shine so that he can leave the world earlier than he should.