It's just a tad unfortunate, because the answer given is not a directly official answer, but I think we can ignore this fact --and thanking your voluntary action-- since I am sure you'll ask team on their official channel for the answer given to my following question and rely them here:

The dual fiat-crypto method of payment helps project reach communities as wide as they can, because accepting both currencies means they're not limiting their project exclusively to fiat community or to crypto community. However, as how it happens in many instances, it raises some concern on the side of crypto holder's, because allowing people to utilize fiat also means decreasing the chance of people buy and then pay with the token. This impose a stunted growth in crypto value because the utilization of the "native" token decreases compared to if the project made all of their users use their token as payment method.

Does Unlock has a solution for this foreseeable situation?