Anecdotally this was also what was told to me by (now retired) electronic engineers who worked in automotive embedded systems in the 80's/90's. The term flash w

Anecdotally this was also what was told to me by (now retired) electronic engineers who worked in automotive embedded systems in the 80's/90's. The term flash was related to the process of UV exposure to erase memory. This was also humorously explained to me as the beginning of the end for system performance. You didn't need to prove out your system when you could just update your hardware after the fact. In a world of over-the-air flashing we have come a long way from fixed design elements.