This "they're stealing my privacy!" outrage is tiresome. Someone built an app; it authenticates a certain way; if you don't like it, uninstall it. Both Google and Apple offer near immediate refunds. But really there's some due diligence required here - installing an app is not like visiting a web page, you should take a little care what you spend money on.
You're complaining that someone else is building apps in a way you don't like. That's their right; they aren't building them for you.
Why should I have to get accounts for those services just to use your app?
Why should apple list apps that can't be used by users because of they require user's to create accounts with companies that are known to abuse user privacy?
The last point I think is the most reasonable: why should I, a user, be required to use some arbitrary third party just to use your app?
If you are solely using them for login support, and nothing else, then all you're doing is adding one more OAuth provider. What makes it so hard to require an Apple identity if you're already willing to accept google or facebook ones?
Besides that, I’m downloading an app from the Apple App Store. They already know which apps I’ve downloaded. They aren’t getting anymore information via “Sign in with Apple”.
They are complaining that these app developers are misrepresenting the cost of the "free" app. What it really costs is access to data about you as a Google/FB user. Sure, build an app like that all you want, but don't lie about it.
In the common usage of the word they are totally free. If you want to redefine the word as it's used, let's start also considering your bandwidth isn't "free" and so these apps aren't free in that sense either. How about the electricity you paid to charge your phone? The calories you ingested that help you operate the phone?
The common and almost universally accepted understanding of "free" is "no exchange of money". Saying those who don't adopt an extreme viewpoint are lying is dishonest.
The common usage of the word "free" is something like "without cost" (yours doesn't work and I actually couldn't find a definition that explicitly says "money"). Placing ads in an app has various costs, just not usually monetary. I don't think you need to redefine anything or go to this odd extreme you're trying to straw-man into the argument.
Does Apple have a feature in their app store that allows developers to mark their apps as "Monetarily free but you have to sign in with Google"? If not, how exactly do you expect developers to comply with your demands when Apple provides no way to do so?
You're complaining that someone else is building apps in a way you don't like. That's their right; they aren't building them for you.