i agree, stuff that drops from trees can be somewhat of a pain to pick up before mowing.

i have 5 black walnut trees in my yard. every other year they drop a rather large amount of junk on the yard in fall. the other years it isn't as bad as the previous year.
i usually just mow over them, but doing this messes up the spindle bearings in the mower deck and sometimes bending the blades requiring regular replacements.
i post free black walnuts on craigs list and facebook marketplace. occasionally i get takers. there are so many, they pick up about 30% of them and quit and they don't come back. at least it's better than nothing.