I’m w/ you on this assuming the question is: “Who needs it on their phone.” It’s the “on their phone” part that matters. It’s like…Who needs a can opener? Most people. Who needs a can opener on their phone? Not many people. The bigger problem being the can opener wouldn’t be as good as the standard tool & the price of the phone would increase. If I wanted/needed a thermal camera I would prefer to buy a dedicated device w/ high performance sensors.
Blackview BL9000 Pro: New rugged smartphone with thermal imaging camera, 5G and very fast charging (www.notebookcheck.net)