Are you sure you don't mean propagators, instead of just helping with the pollination?
Pollinators get rewarded, mostly with nectar - which isn't very efficient for humans.
Corn only exists because humans plant it, its seeds are unable to break free of its husk and self-propagate. "This is not only due to the tight husks, but also because the kernels adhere strongly to the ear and do not easily disarticulate."
However, it can self-pollinate, or cross-pollinate. Farmers don't like it to, because that doesn't lead to the best seed. The best seed for production is created by double hybridization (4 inbred lines). But that veers away from the question.
Many other plants are the same.
Humans are better
Humans also make better pollinators than insects. We're just too expensive to be used as pollinators in most cases. Hmm, that link doesn't have the follow-up to the follow-up, which said eventually the labor costs got too high to employ humans.
But, if you want humans doing it without knowing it, you're going to have issues. Now, some things (pig prohibitions) are done via religious reasons, which are ecologically sound (great Saharan forest elimination) - because some people realized there was a problem, but most humans did not.
You might want to move off of pollination, and rely on scarification of the seed (needs to pass through a digestive tract in order to grow) and make it a fruit which is human-specific.