If Retro is incapable of accepting SN 22.63 at face value, but must resort to making a strawman of my position, it looks like I can have unagi for lunch today.
Even the most "Mahayana"-like sutta, ie MN 1, does not go to the extreme of sunyata that Retro attempts to foist on the Pali Dhamma. In that sutta, the problem is with conceiving a self, but not in perceiving an Aggregate.
If he believes that paṭighasamphassa were the problem, instead of the sequel to adhivacanasamphassa, ie attapaññatti, he should volunteer to re-write DN 15 to suit his world view.
And for heaven's sake, pls don't be so coy and titillate with "it's all there in the suttas". Cite your authority.