The code to remove the template hook did take away the 4 error message blocks, but did nothing to enable/resolve the editing issue (where the Edit Screen doesn’t display the Woocommerce Single Product Block), making actual Product adding / editing impossible.
The Preview, showing the WooCommerce Single Product Block that doesn’t appear in the Editor:
So my issue is that both the Add New and the Edit Product pages don’t edit the template/blocks actually used by the site to display products. Because the editor doesn’t show and allow editing of the actual blocks used, I cannot load products into my shop.