Okay, then let's play the game.
Let's go back to the original example. Let's wipe the slate clean with the Theory of Gravity. While the theory is being re-developed, we'll have to cancel pretty much all space travel for starters. Probably shut down our satellites as well. Probably not too long, since I haven't come across any serious counter-theory to gravity, but what do I know?
If you want to extend this to medicine? Okay. Let's stop researching for a Covid vaccine and rebuild all medical science from the ground up. Maybe we'll come to the same conclusions, maybe the anti-vaxxers will be justified. I mean, I've operated under the assumption that medical science has made the world better overall (it's nice ot live in a world without smallpox and polio for instance) but what do I know?
I'd like to remind you that there's actually historical precedent for this. From the 9th to 11th centuries, the Arab world was in a scientific golden age. However, in the 11th century, it petered out, as an argument formed along the lines of "trying to know God is blasphemy." Cut forward a thousand years, and how the mighty have fallen. I don't feel self-rightous saying that, the series of events I described above is a tragedy.
It's kind of weird being back here, because in the 2000s, I was very aware of the push for intelligent design, to the point that it was even mandated in my Earth Science course at secondary school - the teacher hated it, the students hated it, and we got around it by replacing "God" with indigenous mythology. Right now though, it's more post-modernism - the idea that nothing can be objectively true, that everyone has their own truth, and that said truth will stem from their identity.
And look, I don't mind established scientific theories being challenged. I mentioned on this forum awhile back that in the library, I talked with someone who was trying to prove Einstein's Theory of Relativity wrong. The conversations I had were quite interesting, and while I'm dubious of proving ToR wrong, I think it's great that someone can challenge the theory, since any theory should be falsifiable. But nowhere in the conversation was the suggestion that all of science be dismantled and built from the ground up.