It is not a coincidence that gold mining was chosen as the analogy for new coins.
The emission of new bit coins following the "mining" of new blocks is like the minting of new gold coins following the mining of raw gold.
Because bitcoins are like gold coins.
I agree that neither gold nor bitcoin are suitable for commerce. But the narrative around and apparent intent behind bitcoin from in the beginning was "It is digital currency. It works like gold".
In fact the whitepaper even opens with describing Bitcoin's usage for commerce. The very first paragraph in the introduction!
The narrative has indeed changed to "digital gold" after it's made abundantly clear that Bitcoin is no longer suitable for commerce.