there's no doubt that bitcoin is spreading fast but in 2022 it can't be happen for all to use bitcoin. Because many people of whole world who didn't hear the word bitcoin. In my country, even 1% didn't hear about it. so, I don't think bitcoin will be known to all so fast.
I agree with that. I reckon that in 2022, there might be 1% of the world population own some bitcoin, but most will not use it.