Those are some bold statements. I'm not going to try to convince anyone that what you're saying isn't possible, but, I can say that people who're finally starting to pick up on crypto around where I live are all talking about bitcoin (I noticed a few mentioning ether, as well).
One year ago, I never came across anyone who knew what the hell I was talking about when I'd mention something about crypto-currencies or bitcoin. Today, it seems like maybe 2 or 3 out of ten people have some idea of what bitcoin is and 1 out of 50 or 100 know that any alternatives exist.
That tells me bitcoin is the leader for mass adoption, but I realize that I'm gathering this info from a very small subset of the world population.
Bitcoin is unusuable in it's current form, it doesnt matter how many people know about it if they cant use it.
But their efforts can be used to help altcoins. Either they will be disappointed in bitcoin and leave or they will join altcoins.
Either way it's the altcoins that will benefit the most.
If it's unusable, then tell me why I use it so often and hundreds of thousands of other people use it daily.
Correct me if I'm wrong, is not segwit coming to bitcoin in August? Surely, lightning network will soon follow.
All these things that make bitcoin "unusable" will be solved before summer is over.