(...) there’s really nothing here for any competent programmer, even a fresh graduate. It turns out they they update the software by sending the update by radio.

How they send the payload is hardly the hard part of applying a software update. The hard part is stuff that you need to do after you have the payload: ensure the payload is valid, have the infrastructure in place to roll it out without bricking the hardware, be able to roll back faulty changes if some problem occurs after rolling stuff out, etc.

I can tell you with absolute certainty that this stuff is challenging for the majority of competent programmers out there, and they have the luxury of falling back to telling users to reboot or reinstall the app.