I have a reasonable comfort level with street scalpers, and always enjoyed the hustle, but for sure, the digital era creates more opportunities to get ripped off, while high supply on Stubhub means you don't even need to hustle.
Last year when we went to a game in Queens I was able to screenshot the QRs to give to people who didn't have app log-ins, despite it saying you couldn't, but this year it doesn't seem to be an option (the QR is animated).
I did go with Stubhub, I did get a steal (a 4pm weekday game is really the worst of both worlds for lots of people I imagine) and I didn't have to do anything to receive the tickets, I guess since it's an official partnership the Ballpark app and Stubhub share email info and I can scan the tix from either app.