Just a quick, cursory glance at China and Russia's stealth aircraft make a mockery of actually calling them true stealth fighters.
Aaaah yes, of course. Not only are they wasting their efforts developing stealth, what they have developed so far is "a mockery." And yet they continue to work at stealth and throw huge resources at it because stealth has no future in modern warfare. Yup, that makes perfect sense.
As long as it moves, produces heat, and reflects even the most minute radar signal, it's still going going to be detectable
True enough. But no one claimed (well no one knowledgeable anyway) that stealth is the same as a Klingon cloaking device. Stealth is NOT about "invisibility". It is about signature
reduction. Significantly reducing signature (including reflected RF, emitted RF, and emitted IR) provides a significant tactical advantage over a non signature reduced aircraft, which makes the stealth aircraft an overall more effective weapon system. It does not provide non detectibility.