The problem is, the mods at Twitter may have a disagreement with a user and ban them arbitrarily, like they did with Peterson. Pretty soon, you will not be able to read anything except what appeals to the Twitter mods. Your thinking will be forced and re-defined and you won't be able to say what you think, because of the repercussions.
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In a world where you can only say what you are allowed to say, people will stop thinking and everybody will say similar things. I hardly call that "freedom" and "pursuit of happiness".
i agree with your general sentiment, which is why i pointed out the difference of how germany treats its freedom of opinion. a few years ago a new law was enacted that requires the swift removal of online hate speech and one of the first people blocked because that law was someone making anti-muslim comments. so no, there is no allowed hate speech there.
the difficulty is to figure out what is to be considered hate speech and what isn't. some of that we may have to learn through trial and error.
the new law is controversial because it forces companies to act on mere notification without a court order. which, while considered normal in the US, is not how germans like to do things.