The cap on custodied funds and the $5 purchase increments are a clever compromise geared towards noobs and non-bitcoiners checking out nostr. 

The reality of successful nostr adoption is that bitcoiners will be the minority. Most users will come in not knowing what a sat is and likely treat it as reward points or in-game currency.

nostr:nevent1qqsque55qcddsq6jeh5huflul3hll9289m85gn2a77nypf4a7mwd8gqpp4mhxue69uhkummn9ekx7mqzyrtp7w79k045gq80mtnpdxjuzl9t7vjxk52rv80f888y5xsd5mh55qcyqqqqqqg3eu8xf