It was clearly stated on the mailing list that this is because of Citrea's threat. That's the leadup and it wasn't Peter that brought it up.

However: Peter has for the longest time now stood by a "policy isn't consensus" narrative and that it is naive to rely on it, because it offers little protection in the face of a pluripolitical Bitcoin relay network. See also the libre-relay fork.

Let's ask @petertodd though?

Peter, what weighed heavier in the decision to open the pull request? The fact that you had the code for it already and it was basically asked for, or the opportunity to piss off Ocean peeps?