just because some people don't pay their taxes when trading bitcoin and cryptocurrencies that doesn't mean bitcoin is affecting the economy of the whole country! these same people would never pay their taxes when they do other things so the economy didn't change because of them.
But the economy will change because of bitcoin not because of people.
Yes because of bitcoin and it will happen only when people stop working and rely on bitcoin only, in that way people will affect the economy because it will break down the man power. This is what i think.