I missed something - I have no idea why wheel and tire cleaners are the "dumbest product(s) ever". One cleaner that cleans both rubber and metal very well is EO A2Z. It gets all dressings, etc. off the tire, and cleans the wheel perfectly to prep it for a good sealant.
Your question makes about as much sense as stating car wash soap is worthless because it can be used on both paint and glass (and even exhaust tips!!!:nervous2: ).