No, what you're hitting on is a basic idealization of reality.
Shyv is working from a relatively sophisticated assumption that there is a universal metric. It's not dumb. But it is apparently wrong. There is an awful lot of evidence that there is no universal metric. Reality is arbitrary. Self cohesive -- but seemingly arbitrary. When confronted with any of it the answer is most likely going to be "well, that doesn't actually exist." Skepticism is one thing, and a good thing, but refutations like that are where we veer into dumb space.
Take black holes. There is solid evidence that they exist. No, we have not ever directly imaged one. We might, eventually. It took an awful long time to image molocules -- chemistry and chemical theory worked perfectly well before we did. We have mapped less than 1% of the view available to us. What we have done even within that tiny fractoin of the possible is observed the orbits of distant stars and, in rare cases, been unable to account for their movements without the addition of some superdense supersmall object, which in every observational way fits the theory of how a black hole should exert influence gravitationally.
No one is saying black holes are common. What they are saying is that either they or something that behaves exactly as they should are both possible and actual. An honest man will admit that it is also possible we are wrong about some of the specifics -- but the broad theory is observationally verified.
You can throw that work away with "it doesn't exist. Fake news". That's actually fine. The explaination could be fake news. I will never defend scientific dogma for its own sake. But if you do that you then have taken on the responsibility to propose some alternative to account for observational data. "Huur Duur we dunno!" is both not useful and not true. We do know, you just don't like the answer.
That's fine. It's not insightful or meaningful, though.
These posts aren't dumb. They're just working from a more Newtonian assumption.
That said, there are certainly holes in the current generation of thought. Discord has a valuable place. For example -- The entire set of feynman diagrams (there are thousands) can be desribed with a single line of logic. That's amazing, and impressive, and does nothing to invalidate Feynman's work. Without those diagrams we would not have found the underlying relationships. And they are bizzarely geometric relationships. We have to assume that Feynman would have gotten there eventually -- but there's a lot of legwork to be put in first.