You better take a closer look at his second picture.... my lord you could throw a tomcat between that pin and pin boss,,, that is more than enough slop to tip that truck on its side. I know he didn't pay much for it, but no sense wrecking it.
While it is better to have the pins and bushes nice and snug, I would not consider that amount of wear to be a big problem. If you think about it, when the body is tipped with a load on it, all of the weight would be bearing down on top of the pin. If it is going to tip over, it will anyway, because the forces that are required to tip a truck over when spreading, would soon twist the chassis.
We had a 25' semi tipper, with at least 1/2' slop in the pin and bushes and we worked it like that for years. I did tip it over eventually, but that was more operator error than the worn pivots.
RnR.