Being able to bump a lock or not is a feature of the lock, not of the keys.
Again I'll state, "This doesn't fundamentally change the attack vector, all it does is put a hurdle in-front of it."
One that is now easier to circumvent, true. But one that was circumventable in the past with the correct resources.
"As a result, all anyone needs to open many locks previously considered “unbumpable” ..."
You are implying that this has made the impossible, possible. I think that may be valarauca's point of contention.
When the flaw becomes easier to exploit its isn't so much news, it was bound to happen anyways, I mean your just wrapping iron bandages around a flaw and causing it fixed. This happens in software security all the time. The flaw still exists, just we added an abstraction above the flaw, that makes the flaw harder to exploit.