It's a farce
You can still view the Northern sky from Gemini South - just not as much of it.
Most of UK Astronomy for the last 50years has been a similair farce.
The southern sky is a lot more interesting for a lot of science than the north.
The Europeans propose building a southern observatory in Chile - we don't join because they are a bunch of damn foreigners.
Instead we build a telescope with the Aussies (at least they play cricket). The australian telescope is rather old fashioned design - the Eurpoean one turns out to be rather excellent.
The europeans then build a huge suberb southern telescope (VLT) we don't join (they eat smelly sausages don't you know).
So we join with the Americans (hope to teach them cricket) and the Candians (is it still in the Empire) to build the Gemini telescopes in Hawaii and Chile.
Then we decide to join ESO anyway in the meantime.
Then we drop out of Geminin.
Then we re-join Gemini.
Anybody wonder why he first thing any British scientist does after getting their PhD is to head to America?