He is saying something else.
He is saying that Progressive Creation is a an overarching category that includes Theistic Evolution / Common Descent as one sub-type. On the other hand, special creation of species all the time (e.g. the RTB model, or what I tested the watter with here: A Better Way to Reject Common Descent - #2 by swamidass ), is not an example of Common Descent / Theistic Evolution.
Isn’t that a possibility?
One value of that is it challenges OEC Christians to figure out why exactly they are objecting to common descent. Especially in light of the Genealogical Adam, that is getting harder for them to justify on theological grounds alone. If they already accept “Progressive Creation,” claiming TE is just another type of Progressive Creation provokes those conversations. That, I think, is why @Guy_Coe is doing it.