Shopify merchants can't prevent Shop app from bypassing their online store shutdown

Don’t want them on Shop and don’t want another sales channel to manage. We have occasional high volume in-person shopping days and not enough stock or support to have online and in-person run at the same time. We turned off the online store and Shop so items had to be purchased in-person, but didn’t realize Shop allowed people a backdown to purchase online. It messed up multiple potential in-person sales. I should not be forced to use a platform I don’t want, and Shopify’s Shop does not give you the choice. Even support said it’s not possible “at the moment” (aka it’s intentional) for a store to be fully removed from Shop