You aren’t wrong, but soil can be turned over, and the wildflowers can be removed.

Key Native Nitrogen-Fixing Wildflowers:

• Lupines (Lupinus spp.): Includes Texas Bluebonnet and various perennial species; they thrive in poor soil and are loved by pollinators.
• Prairie Clover (Dalea spp.): Purple (Dalea purpurea) and White (Dalea candida) are drought-tolerant perennials that fix high levels of nitrogen.
• False Indigo (Baptisia spp.): Sturdy perennials with showy, pea-like flower spikes (e.g., Blue False Indigo).
• Partridge Pea (Chamaecrista fasciculata): An annual that grows rapidly, making it excellent for disturbed soils.
• Wild Senna (Senna hebecarpa): A tall perennial that produces yellow flowers.
• Canada Milkvetch (Astragalus canadensis): A hardy, native perennial.
• Groundnut (Apios americana): A vine-like wildflower with edible tubers.

https://edgeofthewoodsnursery.com/wp-content/uploads/Native-Plants-for-Nitrogen-Fixation.pdf

Cheers

Bee extinction means no polination, no polination means no crops; penny wise and pound foolish.

Seems easier than engineering edible yeast to get them the sterols they need.

The solution is so simple. Crop/pollen diversity. Instead of letting fields lay fallow for crop rotation, they could plant diverse wildflower meadows to improve quality of bee health for the traveling bees that get shipped around for crop rotation. Or the bee keepers themselves that sell the services of their bees, could ensure diverse flower and pollen options when their bees aren’t traveling.