Pretty sure that list applies to paint as well, and can be found in most car manuals.
I just searched the most recent manual for my model car, and it said this:
Washing
To help protect your vehicle’s finish from rust and deterioration, wash it thoroughly and frequently at least once amonth with lukewarm or cold water. If you use your vehicle for off-road driving, you should wash it after each off-road trip. Pay special attention to the removal of any accumulation of salt, dirt, mud, and other foreign materials. Make sure the drain holes in the lower edges of the doors and rocker panels are kept clear and clean. Insects, tar, tree sap, bird droppings, industrial pollution and similar deposits can damage your vehicle’s finish if not removed immediately.
Please try to keep your criticisms of Musk fair and unbiased. Otherwise, you risk weakening your point.