Earlier quoted context omitted.
You're ballparking 1 million upfront and >250K for a site that made barely 60K a year? That seems extremely optimistic and emblematic of dot.bomb numbers.
By that logic YC and other VCs are continuously and systematically making bad investments every year. You need to look at it as the total value this will provide Stripe. It's a community of people who will buy their service. It's good will too.
Community outreach is a good thing (tm) but I see now way any sane/experienced business person would pay a million dollars for this.