2. "... as long as fiat inflation is still happening (which means a decrease in purchasing power), you can rest assured that assets like Bitcoin will keep going strong."
I'd also point out that as long as Bitcoin's inflation drops in half every 4 years, as programmed, then there isn't a need for increased participation into the network for a new ATH.
Just maintaining the same demand and supply that currently exists is what helps to drive up price, as we have seen in 2016 and 2020. While I'm personally not a big believer of the average Westerner dumping stable (enough) fiat currencies for Bitcoin, the reality remains that in hyper-inflationary countries, these users don't have much of an alternative store of wealth that can be used for payments other than Bitcoin.
What if 69K was the maximum it could reach, and for the next years or decades it will be mostly fluctuating between 15k and let's say 40k.
I'm also going to say that sure, price could be in the range you referenced for a decade or longer. After all Gold was in a range for a decade between $1K and $2K. The difference being that it maintained it's high valuation ie >$1K, after previously being valued between $250 and $750 in the 80s and 90s, which means it was/is still a good store of value, hence it eventually did make a new ATH even if it took a long time again.