Ray thinks the fiber and antibacterial qualities of raw carrots are helpful in maintaining good intestinal health.

This link has various quotes from Ray over the years on this topic.

https://www.functionalps.com/blog/2012/09/28/ray-peat-phd-on...

Does the fiber in a cooked carrot become digestible?

According to Ray and his research, yes. Eating cooked carrots will promote unwanted bacterial growth in the intestine, and can increase the absorption of beta carotene, which in increased amounts can suppress metabolism.