This is just ridiculous. Many people who regularly uses the internet have never heard of ( care enough enough to find out when someone mention it) bitcoin.Most of my immediate friends and family who are quite internet savvy have absolutely no clue on bitcoin's existence(yes, it's anecdotal ) .Even among us who knows/interested about bitcoin that doesn't mean we're using it.I myself don't see my using bitcoin for the foreseeable future.
Exactly, I meet a lot of people on the internet on social sites/forums etc. and many of them still have no clue about it. Some have heard about it but didn't bothered to look into it as they didn't think it was worth looking at, others had simply never heard of it and these people are well educated and tech savvy and they come from countries where there are a lot of people use bitcoins and there are exchanges there who deals in Bitcoin.
I think there's still a lot of scope as far as making people aware is concerned and I don't agree with OP or other people who think that everyone's heard of it.