> But if you are going to run a website with any services on it (video content, eCommerce, member management, etc) you are going to have partners.
No? At least not in the scale that would require these consent services. Services like member management are literally required to operate the website so those can go into the privacy policy (as would e.g. hosting on AWS or using a CDN).
The reason these consent services exist is that a lot of websites are just content mills that operate entire on behavioral advertising, whether it's the web version of a newspaper or just SEO blog spam. These often use hundreds of "partners" for analytics, ads, targeting, re-targeting, etc. And they desperately try to trick visitors into opting into those.
For your run of the mill Wordpress website you can just get a plugin like https://devowl.io/wordpress-real-cookie-banner/ - and in many cases the free version is good enough.