When the stock market grows it's because businesses have created new value, or are seeking to create new value.
This is different than Monetary Expansion where the supply of currency can be increased regardless if new goods are created or not.
If everyone put their money into Bitcoin, and no one bought stocks, or started companies then eventually the economy would shrink because no one is creating new value, they're only trying to preserve value that already exists.
I want new value created while preserving some of the old value I've already made previously.