Bottom line, we have local officials making decrees and proclamations with no legislative basis -- often the legislature is not even in session as one proclamation is made after another -- and they are curtailing things like right to assemble, right to hold religious services, and interstate commerce.
This needs court challenges all across the country, and unfortunately only the wealthy can afford a big legal fight. Most of them can easily hide in luxurious compounds and aren't impacted nearly as much as those dependent on a regular income, so Elon Musk was doing a public service by openly challenging these decrees and daring someone to arrest him for a crime that doesn't actually exist in any state legal code.