I find the list of states (posted above) where larger RVs supposedly have to stop surprising as we have driven our RVs through them without ever entering a weigh station, often we can see LEOs in or standing next to their patrol cars as we whisk by. They showed zero concern with our 40' nearly 30K# class A with toad.
We have been enjoying the RVing lifestyle for over 3 decades and never heard of RVers being hassled for passing a weigh station, since it is about making $$$ state run weigh stations are primarily concerned with overweight commercial vehicles. Sadly, the weight police on this forum would have them waste their efforts on private vehicles.