Yup. It's the colons after every paragraph's first sentence:
> It worked because it solved a real problem: Kenyans were already sending money through informal networks. M-PESA just made it cheaper and safer.
> Here’s why this matters: M-PESA created a payment rail with near-zero transaction costs.
> The magic is this: You’re not buying a $1,200 solar system.
> It gets even better: there are people who will pay for credits beforehand.
It's just again and again and again. It's sounds 100% ChatGPT.
Maybe this is 100% written by hand by someone who reads too many ChatGPT-generated articles. Possibly the author just spends a ton of time chatting with ChatGPT and have picked up its style. Or it's just more AI-written than OP wants to admit.