NFC is huge in developed countries. Things like google and apple pay (use nfc) are huge in every modders community I am a member of. There are tons of people who won’t install any custom rom that doesn’t pass safetynet (needed for google pay to work).
Us wanting our mpesa QR codes to be universally accepted are just third world problems. We’re that guy at the club who can’t afford a bottle of hennessy so who was draft beer made for?
Remember that mpesa tried to promote contactless payment using their MPesa one tap bracelets and key fobs. (Is that still a thing by the way?) Kenyans are just not ready (or willing) to wholeheartedly embrace contactless payment. Maybe in a few years but I can assure you that when it happens, NFC will be at the center.