Rest API documentation for Products is broken

I know that Shopify is pushing for GraphQL, but at the moment it’s not possible for us, so I have to rely on the deprecated Rest API documentation.

The problem is that the page regarding the product creation gives 404, as you can see trying to click “Product” from here: Metafield , that links to https://shopify.dev/docs/api/admin-rest/latest/resources/product but it does not work.

I understand that the Rest API is deprecated, but I still expected it to work at its fullest until discontinuation.

Yep seems like the product resource page got left out of the docs for the current API version, but I suspect you would be okay referring to the previous version for now: Product

The new changes to the product object make it impossible to be supported by REST.
As you noted, the API is deprecated, and so there is no support for the new updated Product Object.