No it doesn't. Well, I mean, sure, it does in the context of physics, but in regular English speed and velocity are pretty much the same thing.
On the other hand, velocity has a specific and well-understood meaning within agile software development, and that's what the antecedent post was referring to.
Of course, if you were just being snarky and implying that Etsy are completing plenty of nominal work without it resulting in any actual progress, then carry on :-)
OT, but you remind me of a joke a math professor made in a Calculus III class: A vector has both magnitude and direction, not to be confused with our university newsletter (The Vector), which has neither.