I do not claim to be a plane spotter but given where I live I have picked up interest in the last several years after U.S. president 45 was elected and even more now with 46. 46 goes home nearly every weekend and the FAA flight restriction circumference borders right over my house. I also have the locational benefit of being inline with the flight path and approach for Air Force N for 46s comings and goings by plane which I have seen multiple times and I did see 45s helicopter once flying over enroute to NYC.
Others may not be aware that there is the active deployment of fighter jets and air refueling tankers that support this FAA VIP air restriction. Since 46 has been elected and nearly every weekend he is home we experience non stop fighter jet thrust rumble at our location. One will not find these jets on any public data plane location stream yet the persistent presence of the air refueling tankers and the rumble from jets burning fuel on the ready makes it obvious of the jets presence for those in the know. Given the proximity to major airports the air refueling tanker is listed on adsbexchange and fly's in circles sun up to sun down topping off those jets.
A few Sundays back we had pristine clear skys for both PV collection as well as noob plane spotting. Using binoculars on a tripod and sky scanning based on the tankers locations I believe I saw the back side of a F22 coming in to top off. I did get a picture about an hour later of an unknown jet type refueling off the air tanker after months of trying, I just smiled.
As to the point of this "China" ban I personally know the value of such data in my own accomplishments as I see it akin to social engineering. Granted it is not war time so the tanker is broadcasting but I find it an oversight by those in charge to advertise where mother goose is as the goslings are never far behind.