Not surprising at all - since it is tied up in the case of the refugees trapped in Dhekalia since 2000. If children born there are declared to be British then they, and their parents will, presumably, be able to move to the UK. Their status remains tied up in the Courts.
I dont think it is their case particularly, but the possible mass arrival others by land from northern Cyprus or sea from Syria iif the SBAs were allowed to become a shortcut to the UK.
https://www.theguardian.com/world/20...af-base-cyprus