“sponges should not be manufactured on shabbos “
The overwhelming fraction food processing facilities in the US that produce products under rabbinical supervision run 7 days a week. As do most farms. Unless you live off the grid and raise all your own food, you can’t avoid benefitting from Shabat activity. And the poskim for all the major kashrut agencies have no problem with this because they are mostly non-Jews working mostly for non-Jews.