Everybody knows capitalism does not allow suing the party with more money

Actually, it does. You just need real evidence.

Trump has the wealth and assets equivalent to thousands of people.

Trump has the wealth, but he still was deplatformed for quite a long time (and he still doesn’t get his twitter account back).

If his words are dangerous to society, he should be sued. But there is no need to lynch him.

You have no right to chose that some person needs to be banned. No one has.

You can say, that he is telling stupid things, but you can’t say ‘lets ban him’.

You can disagree with his political views, but freedom of speech is very important for democratic society.

BTW, there is a cool and federated twitter alternative — mastodon.