Probably more foe than friend but likely not that harmful. They are known to feed on Hickory, Goldenrod, Boneset, Joe-Pye weed, Staghorn Sumac, River Grape, and Nine-bark. They may be a minor pest to fruits, nuts, and vegetables but I can’t find much information regarding this. Doesn’t seem like something to worry about, definitely not as problematic as the brown marmorated stink bugs.