Crypto is very difficult to value in terms of cash flows, whether BTC should be $120K or not is a big question mark. Regular companies do have standard valuation techniques that are currently silly.
By ‘standard valuation techniques’ you mean: regular companies produce value and wealth and represent what a society can create whereas crypto is like ‘a shiny object sitting there with people trying to gauge how much someone is willing to pay in the future on the premise it will be worth more’ ? :-D
I’m not very deep in the art or collectible business.