I don't believe it is reciprocal across Europe. That's an EASA decision and "fairness" isn't a criteria.
What did you expect? Both sides were playing political hardball with BREXIT and the only reason the CAA is recognising European things, is the two year transition period written into UK law, where all EU law was adopted on the day of exit, until it is repealed.
In short, an EASA licence must retain it's status in UK law until the end of 2022, not because the CAA are being nice, but because the law says so. The European Union don't have an equivalent law, to them, everything British from 01/01/21 is simply foreign.