Well I can tell you, that tracker posted above was 100% not POTUS.
It seems, reading this thread, that there has been a misunderstanding. No one ever said (that I saw) that the image in Post #9 was AF1, as a matter of fact it says that was SAM46 09-0015, which is the backup and routinely circles prior to AF1 departure. Post #7 was 09-0018 or 19-0018 depending where you look (there is confusion over the actual tail number with tracking sites) and was AF1 after departing NYC, it replaced 92-9000 due to the size of the runways it was going to, including Hagerstown which was the final destination for POTUS.
Either way, I really don't see why this has turned into such an issue with everyone, the event is over and it really doesn't matter.
The US Air Force is not going to let civilians follow POTUS in the air.
AF1 can be tracked the majority of the time on ADSB Exchange, Airplanes.Live, and several other tracking services, though usually not on Flightaware and Flightradar24. Marine 1 usually can not be tracked. I track AF1 almost every time it flies, especially when I have credentials to photograph it as I had last Friday morning as it traveled from Dobbins ARB to RDU airport, where it arrived as expected based on our tracking of it.