Let's also discuss then if we want the base layer to be where people record forever and publicly that today they bought a latte and a bunch of bananas using BTC, aka "let's build a circular BTC economy".

I think the base layer should be used for bigger things, like transfers of high amounts of value, property and other big financial transactions. So I find both the jpg monkeys and the latte people equally irrational. However -- to each his own, as long as they pay the price.