It may be that the septic regulations are excessive, but oddly I've never heard anybody argue that the regulations are unnecessary, they just argue that they don't want to follow them because they didn't have to in the past. I'd be a bit more sympathetic to the mountain folks if they had an argument that the regulations were incorrect.
The real property seizure is what's happening to the public land so that people can live for cheap and not cover their own pollution. People still have the land. Though if they want to try to overturn Euclid v. Amber and make zoning illegal, I'm there to help them! Necessary environmental regulations are not something I want to overturn, however.