Mmmm no. They aren't suing for that. They are suing for discrimination. It doesn't matter if they are spreading fascism, socialism, or communism, or God forbid free market capitalism and democracy. It matters that they are being silenced unequally with others on their platforms.
Most people don't understand this:
First they came for the socialists, and I did not speak out—
Because I was not a socialist.
Then they came for the trade unionists, and I did not speak out—
Because I was not a trade unionist.
Then they came for the Jews, and I did not speak out—
Because I was not a Jew.
Then they came for me—and there was no one left to speak for me.
First they came for Alex Jones, then they came for conservatives, and now they are coming for middle of the road liberal democrats. When they come for you will there be anyone left to defend you?