Both health and ethics reasons. Healthwise coconut oil has even higher saturated fat levels than palm oil does, but both are quite high.
Ethics wise coconut is similarly not sustainable, at least not in terms of being yet another monoculture. I would say it’s arguably not vegan because of the harm that comes to animals and their habitats because of the coconut industry.
https://www.health.harvard.edu/staying-healthy/by-the-way-doctor-is-palm-oil-good-for-you
Speaking of things people are better without, I wish everyone would stop using Medium. There’s so many better alternatives - Write Freely, Wordpress, Ghost, just to name a few.