You are absolutely correct in stating that DMARC doesn't address mailing
lists - because you have staked out a position that mailing lists should
not have to change in any way shape or form to deal with any
authentication model. That is extremely constraining out of the gate and
pretty much ends any meaningful discussion at that point. "How about if
we... NO!"
The sentence always ends "... spend our own time and money to break or
remove features our users expect and like to solve your problems", so of
course the answer is no.
I've never said that lists won't change, I've said that we're not going to
screw them up to work around your FUSSP.
If you ever made a reasonable offer, I would be happy to talk about it.
But you haven't.
If the DMARC gorillas hired someone (Returnpath? Spamhaus?) to build a
mailing list whitelist, the goodwill would be enormous and the cost,
spread among the DMARC group, would be nominal. But spending your own
money to solve your own propblems somehow isn't on the table. We're
supposed to spend ours, instead. Are you really surprised this is not
making you any friends?
R's,
John