(in particular that he essentially ignores things like caring about organic food or vegetarianism which fit classic food taboo forms)
He does mention those. E.g. The Righteous Mind, page 254:
The Sanctity foundation is used most heavily by the
religious right, but it is also used on the spiritual left. You
can see the foundation’s original impurity-avoidance
function in New Age grocery stores, where you’ll find a
variety of products that promise to cleanse you of “toxins.”
And you’ll find the Sanctity foundation underlying some of
the moral passions of the environmental movement. Many
environmentalists revile industrialism, capitalism, and
automobiles not just for the physical pollution they create
but also for a more symbolic kind of pollution—a
degradation of nature, and of humanity’s original nature,
before it was corrupted by industrial capitalism.
He does mention those. E.g. The Righteous Mind, page 254: