I think it is normal if people doubt Bitcoin at that time. Bitcoin still didn't prove anything, it was no value at all. People want to see the proof first, they only believe it when they can see the proof. Now, when Bitcoin can prove it, people trust Bitcoin as a great asset. Even a country like El Salvador wants to make it as a legal tender now.
Of course, Bitcoin is the number 1 crypto coin. Everyone wants to have crypto assets, they must prioritize Bitcoin as their main target. Bitcoin has regular halving in every 4 years, it always triggers the price to increase significantly. So people believe it, people can trust with Bitcoin because of the history of halving effects.
At any given time, investors always have both greed and fear for an asset, even if it is BTC at $70K. Some people are afraid that the BTC price will drop sharply in the next few months, others do not want to buy BTC at a high price, while others could have bought BTC at hundreds of $ few years ago. Investors who lack confidence in BTC will tend to choose ALTS or stay out of the market.
Even gold, an asset widely accepted on a global scale, is also a financial instrument that comes with investor debate. The same will happen to BTC in the future, even if BTC reaches $1M. This is completely normal in the market, so believers will continue to believe, skeptics will continue to doubt. In my opinion, from an investor's point of view, everyone who participates in the crypto market should have BTC in their account to ensure profits in each cycle.