While everything is possible I don't see the likelihood of your proposition reason being that crypto-currencies are gaining some ground and some degree of recognition among even non crypto-currencies users. With time the mass acceptability which no doubt will lead to mass adoption will be achieved. Crypto would not go to zero
Crypto was in life for many years. Just some people realised crypto at 2017 some people have big ratio when compared all over users.
With exchanges crypto entered the life of more and more people. Students, engineers, professors etc.
Many shitcoins can die at near future if market conditions going in like that. Most of the shitcoins finding new all time highs frequently.
By the way shitcoins are not crypto world, they have little impact. Crypto survived for many years and it will go in with strong projects. Prices of projects like ETH and BNB will be at different levels when BTC give permission to the market.