I got the fancy treatment, the guy shoved an electronic gizmo into my brake fluid, came out with a red LED flashing, told me I needed a flush. I told him I’d do it (I did), he obviously didn’t like that answer. I open my hood a day later, there’s the brake reservoir cap sitting on the inner fender! I got the last laugh - he left the gizmo there, too.
I also am worried about a group that makes money selling (often unneeded) maintenance coming up with these dire predictions. I would believe it if it came from a brake manufacturers association. Not them.