The life of that camera is going to be much longer than yours, or mine. Life is short. So, if you want to use film, my humble and respectful advice is just buy the camera, use film. By using it, you'll increase a tiny bit the probability that film survives. And when film is out of the woods, you'll be able to say "I was there, I was one of those who saved film for future generations" (put some emphasis

).
By not using it, you are just hoping somebody else will keep film alive for you. And if and when film is clearly out of the woods and soundly rebounding, that Fuji GF670 will become much more expensive, film will be available, but the camera will be out of reach
So, do the right thing! Just do it!
PS I think that even CGW will agree that black & white film will be there for decades. It's colour which is at risk.