"Free Speech" is not relevant to this situation. Free speech rights are limits placed on the government. The only rights you have on Reddit are whatever rights Reddit grants you. And they are free to change those on a whim, or apply them as unfairly as they want.
The US Constitution describes how that human right is protected in the United States from the US Government.
This doesn't mean that Brutsch did anything right or wrong, it's just a description of how freedom of speech is different and embodied in culture and is not just some form of right given to us by the The First Amendment.
