Great topic, Rod, and one I'm sure will never be uncovered. Unless, Michael Moore becomes a wino and films an expose!
A few thoughts that I conjured while reading your piece and then subsequent replies.
First, and foremost, vintners are farmers. Or, at least they should be. I don't even care if they are socialite farmers, but be a farmer. Master Spellman illustrates what a farmer of the grape should be. Vine training, clipping, manure as fertilizer, falconry, the list goes on; are decisions a farmer must make. But, they are the manipulations unique to working with the Earth. Once, you have decided to harvest, you look over your crop, see what the seasons have given you, then you "should" bottle what is represented of that given years trials and tribulations.
House style, be damned!
If a winery produces a "certain house style we want our consumer base to be familiar with year in and year out" then they should not be allowed to vintage date the wine. Radical, I know.
I harken back to an excerpt written in Kermit Lynch's "Adventures on the Wine Route" written nearly 25 years ago. Jean Goutreau, of Chx. Sociando Mallet, is explaining to Kermit how secretive the Bordelais is about chaptilization. Yes, Burgundy had been doing it for years and the Bordelais looked down on Burg producers for it. Goutreau, even believes chaptilization was used in 1982, the vintage of the decade (arguably).
Yes, Rod, we see that elephant in the room, we just can't find a way to kick him out the door!