Ken has somewhere in the ballpark of 50 to 100 Raspberry Pis. You have to remember he is a computer scientist... a bit of a minimalist... a tinkerer... he is interested in code. It doesn't take much in computer resources to code. He has done that with pen and paper for much of his life.

If Bitcoin follows itâ(TM)s growth pattern of the past thirteen years, then this Bitcoin investment could be what propels El Salvador into the G20, but thatâ(TM)s a big if. Bitcoin is generally perceived to be a huge liability to risk-adverse money-makers and itâ(TM)s a big wasteful energy drain in the name of securing an immutable ledger against 51% attacks I think interest in it will remain steady among the fringe but never the mainstream. When the last satoshi is auctioned off in a museum in the mid 22nd century, it will probably be pretty valuable like a artistic technical masterpiece but not what drives the economy at all. It will be interesting to see how the gang-infested murder center of Central America fares in its golden toilet investment into Bitcoin as money.

Maybe the sex worker industry will now unbank and start using something like buttcoin

No seriously, not in my back yard!

I use my System76/ Pop!OS machine exclusively everyday. Itâ(TM)s got quirks, but itâ(TM)s good enough for me. The only problem I have is printing. So I just pdf to usb disk and insert that into the printer and directly print. If the printer doesnâ(TM)t have a usb drive then I use a windows machine

Search the webs for lightning network - it is Bitcoin- and you can see a man buy a beer worth (~$1.50) nearly instantaneously