Just because people do it doesn't make it right. I really don't care what people do with their own equipment but where it becomes a problem is when they are travelling the same public roads I am. I don't want someone that seems to think the rules don't apply to them having an incident with their overloaded equipment and causing injury or death to an innocent third party.
I also can't stand the argument of I'm fine because I only do it a few times a year. If you do it even once a year then you need to equip yourself appropriately.
It's the wild west here, some of the combinations I see are just plain stupid, I really wish law enforcement would start doing more about it.
You also commented about truck campers being over, this is true but also consider the %overload. 400lbs overweight of a payload of 4000lbs is quite different than being 400lbs overweight on a payload of 1500lbs