Bishops are free to refuse, or not refuse.
How does that compare to the canonical status of Ratzinger's clarification? Can a bishop say anything he wants and that's right...i.e., that is the authentic Catholic teaching? Sigerian double-truth theory.
Yes, that is their consensus.
But its also open schism.
The question was, "what is the canonical status of this latest "consensus"?
Canonically, it is an openly schismatic and defiant act, no better than any trad schismatic.