I didn't read your stuff. I read your comments here and I am kind of like "this dude is a dick, so I'm not really looking more into what he has to say."

Anyway, even if you live only on BTC (well done), then you for sure need to pay for some things in FIAT when the recipient doesn't accept BTC, so you are using FIAT in some way, even if you do not hold it.

The scenario I described uses shitcoins, but I am not saying anyone should hold/keep any of these coins (you may need like a $1 in Avax to pay for the fees, and that is it). In my scenario, you end with only BTC, so there is nothing wrong with using the things at our disposal for that.