They can also install rootkits using their physical access to their computers, so they don't even have to move the equipment.
No, you cannot replace physical security with cryptocurrency. Nor will you replace the use of gasoline or computer chips.
To install rootkits you need to know where the computers are or some way to get to them, and that's 100% impossible with bitcoins unless you reveal your own info some other way (e.g. a security mistake)
"Haha, you don't know which computer to steal" is the worst security-by-obscurity idea I've ever heard of.
I never said I wanted banks to run on crypto.
Overall it is a bit sad your arguments reached this low quality; I was expecting some interesting counter-arguments instead of these slippery slopes, not to mention all the downvotes you poured onto me.