when expressions go extinct

As I was listening to a discussion today on the ABC about the future of the Southern Bluefin Tuna, an expert in the area said they might possible go extinct if we don't work out whether we are overfishing this species.

I don't say "go extinct". I would normally say become extinct. I was surprised to hear the former phrase used on the ABC, and by an expert. I had noticed the same phrase used in the book I mentioned on 17 September, The Link, by Colin Tudge.

It appears I am behind the times, so I'd better adjust my vocabulary to the twenty-first century.

A quick Google search on the phrases 'go extinct/become extinct' comes up with a list of sites almost equally divided between the two phrases, but the interesting thing is that many of the brief summaries use both expressions interchangeably.

So maybe I can keep on saying it my way. My way is not extinct yet.