Earlier quoted context omitted.
The Soviet Union had freedom of speech too. It's just that you didn't have freedom after the speech was the problem.
I honestly cannot figure out what you are trying to say here. I don't think you can either. Nobody is throwing anybody in prison, nor threatening to. One of the reasons the First Amendment applies only to the government is that, unlike an app store, it can throw people in prison.
My point is that the letter of the First Amendment and the spirit of the First Amendment are at odds when faced with modern day reality. Between government and corporations, and being fined, vs being put in prison, it's all up for debate. We can look at the letter of the First Amendment and twist and turn it to come to a definition that the courts can agree on, but stepping back from that, the bigger picture is the people are trying to speak and that this entity that isn't the government, is restricting that, with downstream effects. You're right that the First Amendment doesn't apply to app stores run by a private corporation. It's still a restriction on speech by a large organization against an individual, and the freedom of speech gives people the right to complain about it.