The whole "embedded programming is scary and impossible" sentiment seems to be pretty common these days. I mean, it's impressive, but well within the reach of an interested nation-state or even a skilled hobbyist like Sprite_tm.
It seems like the prevalence of modified router firmwares (and botnets based on them) should make it clear that firmware modification is A Thing That Happens(TM).
It seems like the prevalence of modified router firmwares (and botnets based on them) should make it clear that firmware modification is A Thing That Happens(TM).