There's a difference between them perceiving it to have no impact, and it having no impact.
It also may be important enough to keep funding with 0.0001% of the budget or whatever it costs, but not important enough for a higher level of funding. Still requires advocacy.
It also may be important enough to keep funding with 0.0001% of the budget or whatever it costs, but not important enough for a higher level of funding. Still requires advocacy.