I guess this is where client attestation comes into play.
I suspect if this ever does play out, it could result in fewer people using "EU spec" browsers, and more people using the international overseas version, thus undermining the entire intention of the policy proposal.
It seems a pretty safe bet no browser maker would ship these CAs to users outside of the EU (and maybe EEA).
The EU is playing the long game here I believe.
Edit: rest of world might be fine(big maybe, these things have tendency to proliferate),eu citizens... screws are tightening.