I think one of the reasons many cryptocurrencies will not survive this harsh market condition is because they are not built with long term sustainability features.
Some of them have high transaction costs and there by making it difficult for investors and holders. Imagine charging over 40% at this critical period.
Not just them, but most of them designed solely to attract eye balls, but then when you actually stress them a little you'll see the fragile infrastructure.
Put that into contrast with Bitcoin - a state-of-the-art cryptocurrency who has been going strong for 13 years already with no hacks and continuous development.