This is how many Bitcoin people in here are arguing:
I saw some people buy a can of Coca Cola for 2000$ just a month a ago.
Now I can buy a can of Coca-Cola for only 500$, it is cheap!!
Bitcoin is not cheap at 6000$. It is make-believe toy money with no real value apart from some novelty value for people who like to have cryptos for fun.
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How could you compare Coca-Cola with Bitcoins. Both are different things which are completely different in nature. Coca Cola is centralized with unlimited supply and Bitcoins are decentralize with limited supply.
So the Price of 6000$ is still considered as undervalued.

A lot of people can't fathom Bitcoin because it is intangible. Otherwise, we wouldn't get arguments like these. People are happy to measure their worth by a balance in their bank account, which is just a ledger in a bank account. But they get angry because Bitcoin commands a high valuation.