I'm not sure that bitcoin will be used almost 5 years again. To be honest, at this time there are still many people who do not know the bitcoin, if now socializing done then at least it took 10 years to be able to understand the public. And the most important points is bitcoin still not getting the approval of any country. In my conclusion, bitcoin will not be used almost in 2022.
When it comes to advertisement, we don't need many years if the one who advertise it is a well known personality in the world, specially the economists... We don't need a lot of years if that happens, but if it doesn't happen, we will need a lot more than 10 years if we would just spread it normally without hyping... 2022 is still far, so there is still a chance... Who knows...
I am not in your side, even bitcoin is not socializing to public. Bitcoin still have big enough community that still use bitcoin for 5 years later. This bitcoin community was made nicely, big and strong. person who addicted to bitcoin will always using bitcoin as long as they can earn profit from bitcoin. Even only teach peoples around you, and just get few of them interested with bitcoin, bitcoin will still exists until next 5 years.
In whom? with me? It's okay...
Anyway, I am just expressing my opinion on spreading bitcoin... Actually, each time I explain bitcoin to anyone, I don't explain it as a way to earn, that would just make them use bitcoin without even using it and just earning to be converted to fiat and earn... That would just make the situation of adoption a roller coaster too, same as the price, they will come and go...
But if made it in 2022, I wish that we are strong and bitcoin is not looked at for earning opportunity...