sigh Serves me right for using an analogy I guess. Or a "stupid" one. I dislike the need to defend against a strawman argument, but it looks like I am going to.
Anyway, you're right, and so are the other people pointing out quite correctly that murder is still illegal and an agreement doesn't magically give them a right to kill me. But you know what isn't illegal? A company selling your data that you gave to them and agreed to allow them to sell in exchange for providing a service. Yes, I know there are some weak protection rules out there, and things like the GDPR exist in some countries. IANAL, but an app using permissions that you gave it, to do things it says it's going to do in its description and/or TOS is not illegal in most countries. If it was, we'd not be in the privacy clusterfuck that we're in today.
The point is that trust has nothing to do with it. If anything, these companies tell you exactly what they're going to do (and if they don't, that's another problem altogether which I'm not getting into here) and you can trust that they will do what they said they're going to do to make as much money from you as they can. Treating companies like living, empathetic human beings worthy of your trust to "be nice and give you a product for free without selling your data you agreed to allow them to sell" is silly.