I am pretty sure Baremetrics wouldn't be able to do business in California with that policy.
CA passed a law in 2018 requiring companies that allow people to signup online to also allow them to cancel online https://leginfo.legislature.ca.gov/faces/billTextClient.xhtm...
"In addition to the requirements of subdivision (b), a consumer who accepts an automatic renewal or continuous service offer online shall be allowed to terminate the automatic renewal or continuous service exclusively online"