I think feeling a unique moral authority (and condescending tone to others producing) to subsidy is a bit strange - and worth questioning?
He's not wrong though. Subsidies in the USA paid to Ag producers mean you ain't buying a $7 gallon of milk, or $15 a pound burger.
The issue of Ag not being as profitable in the west isn't really a land quality issue so much as a packer inequality issue. The public are the biggest recipient of Ag subsidies, and the vast majority of Americans have no clue about that. Just like the subsidies for O&G are keeping our gas prices down compared to other countries.
I tend to think that people put too much intonation into what others say as a reflection of their own bias, rather than a cold, analytical approach to the policy issue at hand, but that's just me, Sexual Chocolate.