so lets see what we have here, in the real world not the imaginary one.
2013:
* bitcoin is getting popular, it can be mined with PC and it is going up.
* there are multiple exchanges but market was in the hands of MtGox who controlled more than 85% of the volume and the whole market. in comparison today's exchanges control nothing more than 10% at best. if you want to know what that means MtGox to other exchanges is like comparing Coinbase with bleutrade!
* now MtGox uses this power to pump bitcoin price with fake everything. price goes to ATH in less than a month.
* MtGox aka the only reason price went up, runs away so price comes back down. meanwhile mining is becoming impossible to do with PC and slowly becomes a huge investment, so people sell what they have mined and get out.
=> result: crash and bear market.
2017
* a lot of countries have actually adopted bitcoin as a legal currency/commodity/... they call it different things and have different laws but they have adopted it.
* there are a lot of merchant adoptions which was never available back in the days.
* market has grown ridiculously huge that as i said above the biggest exchanges with lots of fake volume only have 10% of the market share at best.
* there is mainstream adoption which nobody even thought possible!
* bitfinex which OP so loves, was hacked last year and for a time it was thought that it is insolvent and will become the MtGox. result? price dropped only 20%-30% and recovered in less than 3 weeks.
* the worst fear this round was the "bitcoin is gonna split and die" which could only result in a 30% drop which only lasted less than a week. the current thing is not even comparable to that fear even though it is bigger due to the price being so much higher.
2013:
* bitcoin is getting popular, it can be mined with PC and it is going up.
* there are multiple exchanges but market was in the hands of MtGox who controlled more than 85% of the volume and the whole market. in comparison today's exchanges control nothing more than 10% at best. if you want to know what that means MtGox to other exchanges is like comparing Coinbase with bleutrade!
* now MtGox uses this power to pump bitcoin price with fake everything. price goes to ATH in less than a month.
* MtGox aka the only reason price went up, runs away so price comes back down. meanwhile mining is becoming impossible to do with PC and slowly becomes a huge investment, so people sell what they have mined and get out.
=> result: crash and bear market.
2017
* a lot of countries have actually adopted bitcoin as a legal currency/commodity/... they call it different things and have different laws but they have adopted it.
* there are a lot of merchant adoptions which was never available back in the days.
* market has grown ridiculously huge that as i said above the biggest exchanges with lots of fake volume only have 10% of the market share at best.
* there is mainstream adoption which nobody even thought possible!
* bitfinex which OP so loves, was hacked last year and for a time it was thought that it is insolvent and will become the MtGox. result? price dropped only 20%-30% and recovered in less than 3 weeks.
* the worst fear this round was the "bitcoin is gonna split and die" which could only result in a 30% drop which only lasted less than a week. the current thing is not even comparable to that fear even though it is bigger due to the price being so much higher.
When I say "carbon copy" I'm using it as an expression; I don't mean it literally. How could anything be a carbon copy of something else in the real world?
Look you bring up some points but it's not the same. Since Bitcoin survived MTGOX, the fear of Bitfinex crashing is much less now. The 20-30% drop wasn't because of Bitfinex, but manipulation.
There are a lot of parallels that you are not including.
. It doesn't mean that cryptocurrencies will die after it. 
