[Closi]

It's both factually and theoretically correct - the UK has left the EU, but laws are extended until the transition period is over.

Note the absence of the UK in the below sources:

https://www.gov.uk/eu-eea https://en.wikipedia.org/wiki/Member_state_of_the_European_U...

[naniwaduni]

It is theoretically correct. The factuality is the point under dispute...

[Closi]

What's your definition of 'in the EU' and 'fact'?

If a nation state doesn't recognise itself being in the EU, and the EU doesn't recognise the nation state being in the EU, It's not in the EU.

https://europa.eu/european-union/about-eu/countries_en#28mem...

[SllX]

Well maybe there’s one way to resolve this dispute?

Did the UK MEPs serve their last day already?