Nitwits will give players with the hero of the village effect seeds as gifts like unemployed villagers would even though nitwits aren't supposed to give the player anything.
MC-152046
Issues with nitwits and the hero of the village effect
Resolved
Invalid
0
(Unassigned)
Unconfirmed
(Unassigned)
Minecraft 1.14.1, Minecraft 1.14.2 Pre-Release 1
Retrieved
Source that nitwits don't give any gifts unlike unemployed villagers? It says on the wiki that both give seeds:
https://minecraft.gamepedia.com/Hero_of_the_Village