This loss wasn't about anything Bron did wrong. Jey Uso is just so over right now they had to strike while the iron is hot. We've seen this mistake before. Examples are Rusev and Bray losing to Cena. Totally messed up their momentum.
I don't see this being a mistake. Booking Bron as truly unbeatable like 2014 Brock isnt gonna work, he's more heel Benoit or Angle where he's tough, high motor, ferocious, and a threat to anyone, but not big enough to where he just can't lose.
Bron's good enough to where this one loss won't hurt him. Half of TSC swore the same thing about the Sami Zayn loss, that Bron should've only lost to somebody like Cody or Roman, but 3 or 4 months later that loss didn't hurt him at all. This is the same, so long as he gets his win back.