Yes, the Chino location will be a satellite operation for some time, but the intention is for the Santa Maria location to eventually be the "HQ" or main location for PoF. The reason is quite simple - encroachment. Civilization is expanding right up to the boundary of the airport in some cases. When I first started going to Chino airport in the 70's, it was a fairly isolated airport in the middle of dairy/farmland. It was known for it's "cow stench" and flat, open fields with no obstructions. It provided many areas for an "off airport" landing in the event of engine failure. Now, depending on which runway one uses, the options are much more limited. To see how much it has changed, just look at the time lapse of satellite imagery of the airport from this website:
https://earthengine.google.com/timelapse/I believe their satellite database goes back to 1984. So, type in "Chino Airport" and look at the differences between 1984 and 2022 - it is stark! You can see all of the buildup and commercial developments close to the airport. Whether we like it or not, this impacts flight operations in a very negative manner. Large, wealthy corporations such as Amazon can easily outspend PoF, the city, county and state all combined together. Commercial interests will always trump everything else. When you have that much buildup close to the airport, it has lots of downstream effects that affect normal flight operations as well as waivered airspace for things such as airshows. Wonder why PoF hasn't had their annual airshow since before Covid? Hint, it has to do with waivered airspace and the difficulties in obtaining it. From what I've been told, when it comes to waivered airspace, the FAA won't allow any non-essential people underneath the confines of that airspace. Guess what is below that airspace, in the immediate vicinity of Chino Airport? Walmart, FedEx, Amazon, BestBuy, and Kimberly-Clark are all among the warehouses, fulfillment centers and/or storage areas that are underneath the traffic pattern at Chino. Most of these corporations probably operate a 24/7 operation. What do you think the answer would be if either the FAA or PoF were to ask them to suspend operations and evacuate their personnel from those areas for most of the day on Saturday and Sunday during the airshow? There is your answer.
If you notice, PoF has now taken over the "Central Coast Air Fest" airshow as the primary sponsor/agent in charge of executing it. More info here:
https://www.centralcoastairfest.com/This airshow has replaced the annual PoF airshow at Chino airport. This is now one of, it not the largest generator of income for the museum. The move is by design, by choice, as it is very difficult now to obtain waivered airspace around Chino Airport. In my opinion, I don't think we will see another airshow at the Chino airport location.
From my talks to PoF personnel, they hope to keep the Chino location open and operational indefinitely, as long as flight operations are able to be conducted there. So far, there is no threat to airport closure, so it could remain for decades. My impression is that they will operate the Chino location as a satellite facility, much in the same vein as Valle.
Hopefully, that gives you more insight into what has transpired and the reason for the move.