Guidance
IIRC The CAA has used guidance in their wording which is all it means.
The IAA has withdrawn their instructions stopping flying.(think they overstepped their remit).
The DGAC does not prohibit flying.
I think that unless the respective government passes a law prohibiting any sport flying then there is no reason in law that says you cannot fly.
Probably there is some clause from the European law makers that allows freedom to fly.