I agree that there's no promise it's a file. After all, fuse will let you mount anything as a filesystem. But I'm trying to think of another file I can "delete" and permanently hose my computer, but I'm coming up blank. Maybe some fuse filesystem somewhere can do it, but none of the ones I've used.
I mean, yeah, I've destroyed many a partition table in my day, and I've permanently lost myself some data, I've even dd'ed in the wrong direction with no recourse but to suck it up and deal with it, but I've never fried a computer with a rm command. (Contrary to what some commenters seems to be viciously defending, this does seem to be a legitimately different level of destructive possibility than has conventionally been available. This is the sort of thing that would put me off having ever installed Linux in the first place.)
I mean, yeah, I've destroyed many a partition table in my day, and I've permanently lost myself some data, I've even dd'ed in the wrong direction with no recourse but to suck it up and deal with it, but I've never fried a computer with a rm command. (Contrary to what some commenters seems to be viciously defending, this does seem to be a legitimately different level of destructive possibility than has conventionally been available. This is the sort of thing that would put me off having ever installed Linux in the first place.)