This is a very SF-specific view of the world. :)
Rent control is specific to just a handful of locations and is often subject to statewide restrictions (e.g. Costa-Hawkins). In general, renters are less inclined toward NIMBYism. This is especially true for the younger ones, who don't benefit as much from RC even in the locations where it exists. And even rent controlled tenants don't like the fact that they can't move.
So, if it's “almost exclusive” to any pair of states, it's New Jersey and New York, not NY and CA.
(The source is also inaccurate in at least one respect, in that NY by the description given on the page and CA due to Costa-Hawkins both meet the criteria for a “Yes” in State Prohibits or Preempts Rent Control column, but both have blanks in that column.)
Renters (often under rent control) are NIMBYs as well, don't understand or are convinced that supply and demand don't apply to housing.