
Let's make a tack to computing.
"The fact that these executables were 64-bit only hints towards outside development, since Raspberry Robin was developed for both 32-bit and 64-bit architectures."
We see this everywhere ... but how secure would a 16-bit CPU operating system be? Certainly a little slower than today's computing but a nice slow CPU with only 16-bit calculations would be a lot harder to process malware installations. How much malware is available for installation on a CP/M system? But Windows ran fine in those days too.
Back in the slow CPU days with a 300bpm network we saw virtually no infections, all of today's risks are mostly a result of a much more powerful computing world. But other unrelated environments work exactly opposite, a 70mph speed limit reduces accidents, upgrading roads to set the 70mph limit as a minimum speed (arresting anyone only driving at 60mph) would not help. I just think we need a very large change in our computing world to be safer like we used to be.