Freedom of Speech also means Cloudflare doesn't have to host anyone it doesn't want to.

Freedom of speech is a cultural value, it's not something strictly defined by the US constitution. It's the reason there is a constitution not the other way around.

There's a lot of incorrect things in this, but to address the incorrect thing most relevant to this discussion:

What you are asking for is called compelled speech. If what you think "free speech" is were true, the government could force newspapers and online news websites to publish articles written by the government that they do not agree with.

I don't understand how anyone reading someone saying something like this doesn't immediately picture some government organization with an authoritarian leader holding the exact same value while considering dissenters a harm to their society.

Considering DDoS is illegal where I live, no, nobody has the right to do that here! What does that have to do with Kiwi Farms?

I agree! KF is expressing their speech just as freely as they did before. But less of society is choosing to support that speech. What do you see wrong with that?

The ACLU also protected racial minorities and queer groups. The "free speech absolutists" who come out in force to protect organizations like KF rarely do that.