Is "anti-gravity" a psyop?

I've always wondered which UFO theories are purposeful disinformation designed to throw geo-political rivals, on a wild goose chase. Perhaps anti-gravity is one of them? The most common unexplainable propulsion characteristics we see with the UAPs is insane acceleration, and they don't seem to interact with the atmosphere (no wake, no sonic boom, etc). Even if the UAPs had the means to cancel out or reduce the effects of gravity, they'd still have to worry about inertia and fluid interactions...