I've been to that tiny part of Patagonia. Sadly Welsh is no longer spoken - the older generation understands it, but for the kids it's strictly Spanish.
Curious as to your answer: why is it sad? Surely if the kids speak fluent Spanish instead of Welsh then they can now (in their first language) communicate with far more people in the world. That's got to be better for cultural exchange, social mobility, access to services, business, etc., no? I can see an argument about losing some of the rich tradition, but the world moves on.
