Thing is, gold is impossible to spend. When current fiat collapses, people aren't going to be able to transact in gold. It will only be silver or digital. I've self custodied bitcoin for eight years. No issues. And with Square bringing bitcoin payments online, using it is getting easier.
Discussion
Yes, gold is very difficult to transact in, directly. You usually have to change it to something else, first.
Square is an American thing, like Venmo.
Everyone tells me that they've never had any problems with anything.