My ancestors have fought, bled and died so that I could have my freedom today. That includes the freedom of speech. We all have it. The moment we start limiting it is the moment we start losing it - all of it. It is also the moment you spit on the grave of your ancestors.

What not everyone has is some tough skin to ignore toxic behavior.
What not everyone has is the ability to control their feelings like it is expected of adults.

You are free to talk whatever you want.
You are also free to cover your ears whenever you want.
If you see someone posting something you don't like, then just put them on ignore list.
If your ignore list is full, then ask for creating an addon that would extend it. Or even better make it yourself!
And if you can't then use that situation to train yourself to control your own emotions.

You and only you are responsible for what you feel.
If there are people who can choose to be calm and focused while someone tries to kill their mother with a knife, then you can choose to stay calm when someone types words in a video game.
And if you are unable and fail to control your emotions, then accept that as your failure. Only then you will be able to use it as a learning opportunity.
As someone wise once said: "A failure is nothing more than an easily forgotten part of success."