Well if long term archival is your concern, its not the write cycles you want to worry about (I was using an extreme example for a bios flash ic) but bit rot in general, which is a concern for pretty much every type of digital media. Spinning rust can seize, Optical and tape media can physically decay, flash media cells can gradually lose their electrical chare over time if they are not “exercised”.

Edit: however its not unheard of for SPI flash to have specs of 500k write cycles and a 100 year data retention (below 500k write cycles) these days, so if a 2025 machine was using such a chip you just got to make sure the caps don't leak and erode the PCB, or the thin layer of epoxy bonding the multiple layers of the PCB breaking down causing it to delaminate.