This is not speculation it's first hand opinion, I am from the UK, i distrust all UK ISPs, their DNS is filth and they are suspected of working with GCHQ... I agree US companies and US law in general are worse for data protection than the EU, but on per company basis CF is more trustworthy and half of the purpose of their DNS is to attempt to provide more privicy.

And practically, US companies are not restricted from selling of user data to third parties, while EU companies are.

I think in most countries, government can approach domestic companies to hand over data in case of illegal action.

The problem with the US is that data is being used against you, like recent events have shown.