I participate and fully endorse spending Bitcoin into circular economies.  Bitcoin Beach and Berlín in El Salvador are excellent examples of this. There it works every day as money. Not only as a form a payment but merchant "A" will go to merchant "B" and spend money they've recieved over the week.  The velocity is what keeps this flourishing.

Aaron Day has created a conclusion and then he's gone about finding information that supports that. So leaving out important details which exemplify Bitcoin scaling (Lightning among them) is not surprising. He probably doesn't even know about it because he's never looked. Investigating as to why one might be wrong, is not conducive to a shills need for face time on the pods.

Frankly, I find it despicable. 

Save Bitcoin - absolutely. 
Spend and replace as well. 

I've used Bull Bitcoin in this way. Send  funds from fiat account to Bull. They arrive quickly, are available to spend, which I turn into lightning at Bull and send to my hot wallet.  I'm just converting fiat into Bitcoin. It's no different than a debit card with the exception that the merchant gets Bitcoin.  I've essentially just spent fiat in a swap.