Actually, yeah it does, as the Y in DIY would indicate that you, the owner, made it.Whether it is hand made by me or by someone else does not make it a non DIY cable
You bought a hand-made cable on Etsy. Which, I guess is the same as any other cable, whether it's made by a big brand or not.
But semantics aside, you are correct. There are lots of great hand-made cables on Etsy made by sole-proprietors. I bought one myself made by AudioNinja and it's awesome.