I have no problems seeing a bright future for BTC, but after a major retracement it might again take many years to recover. Look at the last sell off down to $3700. It took almost 4 years to make new ATH.
So should this be the major, expected drop, it could again take many years for BTC to reach 100k.
Many people will be dead before BTC will reach 1 mio.
The fact is that the crypto market has a cyclical nature and now we are at the end of another cycle. It is likely that starting in 2022 we may see a deep correction and it may well take another 4 years for BTC prices to recover. However, this was the case before and it will probably be this time, but there is also a chance that everything will go according to a different scenario and then one can only guess what will happen to the price of BTC and other cryptocurrencies.