I think regular credit or debit card payments for services would help reach, as would a nip that allows users to specify what crypto they will accept. Let the free market decide what's better. The decision to be Bitcoin only is a principled decision, but like overlapping venn diagrams it selects for a smaller subset of users. Some of the big apps require kyc to use zaps, so defeat the point of permissionless money. They could be good fiat to Bitcoin onramps. We set up to be Bitcoin only, but all the people we reached out to IRL ignored that and payed cash or didn't come back.