It’s very common for the girls to make slaves worship their feet while stroking their cock. Goddess Matilda is no different as it is a very common practice for her with all her male property. Part of the reason is that it helps the male gender associate their pleasure with that of kissing the lowest part of the female body, her feet. It builds a natural subservience in men which in turn makes it even easier to enslave them as toys and playthings.