I believe that's the case, yes.
I've said it before in other threads, but the only people pushing for the division of California into 2+ states are out-of-state republicans who want to lessen California's currently monolithic power as a state and divide up its electoral college votes into at least some chunk they think they can reap, the aforementioned rural conservatives living in California who "want the damn big-city liberals to stop taxing them and telling them what to do" and the wealthy, coastal conservatives who want to stop paying to support the second group and who want to prosper from California's built-up resource, human, and infrastructure capital without having to pay taxes to support it.
You'll notice the speculative maps for carving up California into multiple states (I've seen up to 5) are done so to segregate those poorer rural conservatives safely away from the rich conservatives who are drawing the maps, all while whispering in the rural conservative's ears about all the evils the liberals are committing against them.
I like to think of it like an old west melodrama, wherein the rich, greedy land baron convinces the poor, uneducated hothead ranch owner to divest his lands from the federal government under the pretense that the ranch owner wont have to pay grazing fees, and all the ranch owner has to do is give the land baron exclusive access to a mountain on the property that only the baron knows contains gold. And all the while an out-of-state oil tycoon cheers them on so he can more easily secure the rights to tear the whole place up for oil drilling.