Awesome article, i have similiar view, Bitcoin might be in a bubble, an a lot of other cryptos might be also, but there are some that would survive the bubble. For example Ethereum offers something more than just transfer of value and therefore has some real case uses. Bitcoin transactions are too expensive and take too much time, so you can't even comfortably by a coffee for it. I believe in IOTA, which has zero cost transactions and is much is capable of much larger transaction volume than bitcoin. If you want to know more about it, checkout my steemit post about IOTA
RE: Is bitcoin a bubble? A graphic that scares