Look under "NiceHash-able", if the number is less than 100% it means (to an approximation) not enough idle hardware exists on the planet to perform an attack. This means any attack must start with a manufacturing project that must stay secret for a decade+, then outpace growth and eventually surpass the capacity of the private sector. And then you need the energy to actually run the chips - no country would ever consider diverting that much energy away from their population.
If it were possible to compromise a $xxx billion dollar system, with only $x million, don't you think it would have been done by now? Maybe even by some bored billionaire just for fun?
And trust me, I don't think posting in a dead HN thread will speed up or slow down crypto's success in any way, lmao. I just enjoy the banter.