I think they're making a comment on the way vegans communicate their worldview to others, not necessarily a fixation on honey.

There's also an argument that diet should contribute to thriving, not simply existing in the most convenient way to balance bodyweight.

If your goal is to build strength and muscle, an all vegan diet will be less effective than supplementing a similar diet with animal proteins. Every few years, a top contact sport athlete will give a full vegan diet a go, but they invariably fall back on animal protein because they can't build the mass required.

Ultimately, it's all individual choice and body chemistry.