Right.....Where does he admit that? Please quote in context. He seems to keep supporting the idea that it is evolution:
"Is a colony considered a multi-cellular organism?
Good question. I would not think so. Rather, the colonies could be imagined to be the first step towards evolving real multicellularity ('an organism that reproduces by making a copy of the whole, and consists of different types of cells')."
In that post he clearly claims it is evolution. Where does he say that it is not?
....there.Rather, the colonies could be imagined to be the first step towards evolving real multicellularity...
You quoted the right part. You saw it, too. What does "imagine" mean to you?