If you are falling down drunk, it definitely is possible to fall into a river. That’s not inconceivable at all. However, I would say it’s more likely that he was helped into the river. Speaking about probability, a falling down drunk person will definitely attract attention to themselves. Also, evil people are opportunists. They prey on the weak and vulnerable, and do things when they think no one is looking or when they think they can get away with it.
Why would someone help into the river? There would be no need to. A person that drunk is not going to remember a single thing anyway.
“If you are falling down drunk, it definitely is possible to fall into a river. That’s not inconceivable at all. “
Happens all the time. I don’t know the show but there is a guy/team that scuba dives rivers exploring missing persons cases. They have found dozens of cars that missed the turn, went down the boatramp etc. They have found them in surprisingly small streams .... skeletons inside.
People constantly fall into rivers. Odd, but very real.