I still use my spouses iPhone 13 Pro from time to time and it’s basically the same phone as my 15 pro. Most of the overheating issues were fixed and the 15’s battery life is objectively better than the 13.

These companies are very good at marketing mass produced cases they buy in bulk from china. They can essentially sell one case and pay off a bulk order of 100+ if we’re going by Alibaba pricing for casetify clones.