In general, the availability of credit has been a positive economic factor that helps enable capital expenditures that otherwise would only be available to the wealthiest. Lack of such credit leads to capture of means of production and rent seeking behaviors in economic terms.

However, it’s become more and more clear that not all credit is created equal and what you spend the resulting capital on matters a lot. If one buys a house to live in or equipment to make money with - that’s generally good use of credit, assuming costs do not outweigh the benefits. I can’t think of a situation where buying lunch that one has to finance is a good thing (as different from credit card points harvesting/optimization). The implications of anything similar to payday loans going mainstream feels like a large societal risk.