Real missed opportunity, reality TV is so creatively bankrupt. The next season should have been a heel turn, where he becomes a river monster with scuba gear covered in ghillie, all LED glowing red eyes and a vicious CO2 injection knife. He'd sink a boat, maul a giant fish and leave its remains by the shore. You could get drone aerial footage of the whole thing.
Then he'd dry off and slink back to the local fisherman's bar to do talking head interviews with the aggrieved locals, a coy smile playing across his lips that some drunk man might mistake for disbelief. Bar fights ensue. Great television. Jeremy Wade: real life cryptid, or some kind of hellish Scooby Doo reenactor? The world would find out together on TV.