I suspect that what we have here is the usual half-researched, EU scare story nonsense written by semi-comatose journos who can't be bothered to leave the bar long enough to check the facts.
These are the same breed of cretin that told us the EU was going to ban bananas if they were too straight, ban British chocolate because it was not chocolatey enough and ban British sausages (some newspapers actually picked that one up from Yes Minister).
Let's wait and see what ACTUALLY happens - I suspect that the legislation (like that applied to car emissions) can't/won't be applied retrospectively to aeroplanes like the DC3.
Air Antique are trying to flog their classic flight (or were) - maybe this is a convenient excuse for grounding increasingly expensive DC3s.