I guess the OP is a bit harsh on purpose in order to create a debate. But he isn't totally wrong. Hodling blindly without spending isn't helping adoption. I would have understood it a few months ago when transaction fees were exorbitant but now that we are back to normal, it's very easy to have some satoshi's in a mobile wallet to pay small amounts and re-buy the satoshi's afterwards.

It runs the whole machine, the merchants are always proud to accept BTC so they spread the word, it starts discussions about cryptocurrencies with other customers, etc... And of course a beer paid with BTC just tastes better