I don't think it's that cynical cos there are clearly non-UK based people who have full memberships so it's smells of a cash grab. They will likely dress it as they've had feedback from international members saying they want ticket access 🤷🏻♀️ but not tiering it like they do for the other two is, well, shitty.
Another cynical thought I've had is cos they've stated 'UK Members' and 'same benefits as', maybe they're making it so only UK based can be on the light/full going forward? and if you're a non-domestic full member you're going to be pushed on the international?