Joe the Aroma wrote:

The reason I'm asking is, low-carb vs. mainstream nutrition aside, it seems
that vegetables are a much more low calorie way to get whatever nutrients
are available only from plant sources rather than whole grains.

Since when is low-calorie the measure of anything?

Only for people trying to lose weight because they have a long history
of abusing their bodies.

I suppose one could survive awhile, by eating spinach like Popeye.

Of course, if you are planning to live a long life. Then I would
suggest eating real foods which of course would include whole grains.