This is an extreme edge case (and a commonly used, I would say flawed, argument). The great majority of BTC users/miners are not Venezuelans, Zimbabweans, etc.
Also, implying that BTC is somehow "stable" is extremely misleading.
Why is it a 'flawed' argument?
You specifically said 'the only value it actually generates is for X' and I showed that your claim was factually incorrect. Why do you think that is flawed? Because you were wrong?
http://www.cbc.ca/news/world/venezuela-bitcoin-1.4447568