Each 3rd party add-on is probably required by marketing in one form or another (analytics, social sharing, partner data, advertising, ). And possibly development has been done just thinking about how to do something, rather than if they should be doing something. We don't know what the gatekeepers have managed to prevent getting deployed...
Part of how I see my role is to always to have a product-owner sanity-check hat on. But at the end of the day, it's the people with the wallets who decide what gets included in their outcome, even if it's against the recommendations of experts.
Commercial reality sometimes trumps common sense.