I think you really harsh realist and I quite agree with you. Bitcoin might well go below 2000$ as well as etherium below 100$. Also I think there will be rail switching towards ripple and stellar.
There is no tangible proof of this idea. I don't believe prices will fall that far. It will stop at these prices for a while and then the prices start to rise again. Worst-case scenario, it'll be back in 2020.
I also believe that Bitcoin and Ethereum are unlikely to fall so low, but I do not rule out that this can happen for a short period of time. Ahead of the New Year holidays, then the Chinese New Year and the lull on the crypto exchanges, at this moment we can see a greater drop in prices for all coins than now, including Bitcoin and Ethereum.
it can happen since the holiday seasons are approaching many holders will sell their holdings therefore the tendency the market will dump and those dump will really affect the market situation this year.