This is just the worst case scenario, don't take it too seriously. BTW it is still a possibility considering that stocks were in a bubble pumped artificially by the FED. We'll check at least 2 years from now.
This is an extremely bullish case for long term based on past market cycles. $20k would be reached exactly 2 years from now.
ALERT: not a financial advice, just based on past movements and assuming Bitcoin has already bottomed. It is still very likely that BTC could drop even lower than $3k. Stay tuned.