Sony Japan are not afraid of quad blocked titles and previous DSD releases effecting their sales apparently.
Indeed.. It seems to mostly be AF that are concerned about that (fair enough if that's how they feel).. On the other hand AP clearly aren't bothered about all that (e.g. AP's Doors SACDs with the old DVD-A 5.1 mixes, Snorah Jones with the old 5.1 mix, Herbie HeadHunters & JB Blow By Blow Quads...) and I'm sure other labels aren't either.
AP could easily be overlooked in all this but they may just surprise us with their future SACD releases of other titles with existing Quad/5.1 mixes, they're certainly not anti-surround are they..