My partner, who is a biologist, hates this take as a mostly grammar trick. Then again, she has no patience for philosophy in general, so that probably explains it.
I think the awesome takeaway of this post isn't about the naming and categorization of things (like "tomato is a fruit" or "humans are fish") but the shocking (to me, at least) fact that trees evolved and unevolved so many different times, and not just once.
Did the fish drive the trees out of water in the first place?