It has value if it CAN be destroyed. Because loss is irreversible depreciation.
(I actually would add "destructibility" to one of the key characteristics of property, which is not quite orthogonal to "persistence" as referred to in the manuscript).
I wouldn't

How do you destroy a bitcoin?
At the very worst sending it to a random address is more akin to put something in a safe and throwing a key then really destroying it.
To be precise, in the real world, nothing really gets destroyed - just disassembled - maybe into atoms. Thus, when I mean destroyed it is equivalent to inaccessible.