I'm only buying in btc "saving money". Local currency (which my business generates) is spent either in supplies, wages, or just living here. I have yet to change some btc back to local currency (Which I might do to make a large purcharse or some emergency), but will probably just change USD cash (it will be easier).
BTC is not being used for small purchases (So no bitcoin to pay for coffee). Is really just used as "store of wealth". Most business could take USD if you want to use it for payment and some even demand USD (car repairs, construction work, that kind of stuff). Most people DO know about bitcoin, but I wouldn't say is mainstream to own it. There's still fear about volatility.
[1] https://arstechnica.com/tech-policy/2018/02/venezuela-says-i...
I agree it's a farce. Save from speculators, nobody is going to buy Petro as nobody trust the Venezuelan goverment. It's probably a money laundering scheme.
Maybe the government will try to force it on the population (By making certain things only payable in Petro), but nobody has any reason to invest in Petro as it is now. The next goverment will surely not recognize it and it's value will drop to zero (Maybe even before a new government steps in)