Presumably because Google offers social identity auth now (which could be revoked arbitrarily).

exactly

And, not disagreeing, but a moot point as well.

It’s not like ICANN is guaranteed to not kick you out for “hosting illegal child pornography and advocating organized violence”. It will happen once enough individuals starts relying on DNS.

ICANN isn't in control over DNS because thats some platform they own but because they are a public institution and managing DNS is their mandate. Consequently, they don't get to nuke your domain and then tell you to pound sand.

ICANN also cannot boot your domain directly - they only control the root zone and delegate responsibilities. Maybe for gTLDs they have some say but if you get a ccTLD then the only one who can kick you off is the corresponding country - and if it is your country then that greatly improves your chances of pursuing legal action if your domain is taken away without due process.

I hope a judge will have a say.