Second, adoption is way up and btc is only one cryptocurrency. It gets first-mover advantage in this market (unfairly, probably) and so continues to be a bellwether despite the fact that it is a relative dinosaur, technology wise. I'm fine with that, personally, despite the problems with the technology.
That you haven't adopted the tech doesn't mean that adoption is failing, you know. There are more users every year (this is difficult to pin down for obvious & good reasons, but the indicators are solid) and no technology with millions of users globally, including institutional adopters, can be said to be failing.
Further, to call any payments technology 'mildly popular' which safeguards USD 1.5-2.5 trillion (total cryptocurrency market cap, BTC accounting for over 760 billion alone, despite the recent corrections) in deflationary wealth undermines your argument to the point of bad faith. Is the cryptocurrency market overheated and full of nonsense? Of course. But let's do the analyses with level heads at least.