(Tedious disclaimer: not speaking for anybody else, my opinion only, etc. I'm an SRE at Google. I can't respond to most of the things in this thread, so don't bother asking.)

"If Google were to provide real transparency into the information they track about me, that would be fantastic."

"In no way do I believe that is all the data Google tracks about me."

The second comment here is why there's no point in doing the first one. It doesn't matter how much information we release about this, when people are determined not to believe it.

It is a frustrating experience for the people who work on them to pour time and effort into making sure a privacy policy is really precisely accurate about what is happening, and then see threads like this where people will go looking for loopholes that aren't there, and because English is fairly ambiguous they'll eventually find a way to misinterpret the words to support what they wanted to believe all along.

Here's an interesting hypothetical question: if the primary effect of the conspiracy theorists is to throw bricks at the people who are trying really hard to make sure the bad things never happen, then which side are the conspiracy theorists really on? (I make no claims about whether this is what's happening, because I can offer no evidence, I just think it's an interesting question)