You cannot and you will not control everything people do on the road to your satisfaction or your personal opinion of what is "correct".
You claim you see all these "poor towing choices", yet you have ZERO objective evidence to support your stance. It just becomes your opinion and thus there is nothing you can do.
So yes, people like you need to just go on down the road and mind your own business.
ETA I'm not trying to be difficult, just a realist.
What are you going to do if you see someone making a "poor" (by your standards) towing choice?
1) Call the highway patrol? Nothing will happen unless there is crap falling or about to fall off the trailer. And even then that requires a trooper to be somewhere close and not otherwise busy.
2) Write your legislator? Yours will be the only letter on this topic out of the thousands they get every year. It will go in the circular file and you will get a form reply from a staffer.
3) Take matters in your own hands? So you will roll your window down to give the other driver a piece of your mind. LOL try that and let us know how that goes.
Seriously, just let it go. Either slow down or speed up to get away from whoever offends your towing sensibilities and spend your energy elsewhere.