The 2-piece rotors (7012R) are still available as of just now: they are the ones I ordered this morning, and why I provided the
link (I try to provide web references, in order for my claims to be more easily checked -- sometimes I make mistakes after all

).
I struggled with the choice of Centric, given your eloquent explanation of what the company does. In the end, I decided to go with Raybestos rotors and pads so as to brand-match the other components (new master cylinder
MC36283 for $65 with shipping and tax, and Raybestos Element3 brake hoses -- one BH36651 rear center and two BH35017 fronts). I will post photos of the boxes and rotors upon reception.
PS: One more thing. The Raybestos are described as 2-piece units by RA.
View attachment 468780