I’m not sure that’s really a valid argument. Lots of things are not explicitly identified in the Constitution – especially when you get to the local level detail of managing a city or town. There’s nothing about delegating power to a city council or a county recording office.

https://en.wikipedia.org/wiki/Zoning_in_the_United_States
https://en.wikipedia.org/wiki/Village_of_Euclid_v._Ambler_Realty_Co.
“In short the court ruled that zoning ordinances, regulations and laws must find their justification in some aspect of police power and asserted for the public welfare.”
So derived local power from the 14th amendment.

My take is that outside of a few areas of the city, there is pretty minimal impact. It will be interesting to see Mission Beach in a few years.

I’m only surprised that the STVR that properly registered with the city were not grandfathered in. All the others that didn’t follow the rules or didn’t bother to find out, they were essentially illegally running a business.
By buying a property and registering at the county recorder’s, a buyer is acquiescing to the right of the city’s municipal code which includes the zoning rules. Otherwise, they should have taken a court case to argue before buying – though unlikely to succeed due to stare decisis.