That is not what I said. I asked what the justification for them existing is. None of them sounded valuable, and seemed like just additional ways for ads and malicious sites to track you. So what are the up sides? I actually want to understand.

None of them sounded valuable to you - I have no problem imagining how those APIs could be useful (e.g. some simple apps may be replaced by a web application). One can easily apply your argument against access ramps ("My establishment already has stairs, a ramp doesn't sound valuable")

Can you see how they also create privacy problems?

If ramps hypothetically did create privacy problems, would you still wish them out of existence, despite their utility to other people?