That just depends on what evidence you do, or do not believe. Depending on your selection, and number of explanations may make sense.
> In an unstable world, where power projection is necessary & inevitable, it is a tactical move to neither confirm or deny existence of unparalleled technological edge
Personally, I'd believe UFOs were all fake/mistakes before I believed it was real technology held by any government.
> The fact it isn't seen by India China Turkey Japan or any other sufficiently advanced military
It is. UFO reports come out of all of those countries. India has a religious tradition with very clear UFO references, and videos come out of China all the time (although they tend to be purposely faked 100% of the times I've seen).
NUFORC has a kaggle dataset in fact: https://www.kaggle.com/datasets/NUFORC/ufo-sightings