Furthermore, you can tell he doesn't understand science either. No one who understands the scientific method will confidently claim that all we have discovered now is the truth, and will be inevitably rediscovered. In fact they will tell you the opposite, that everything we have now discovered can be discarded upon new evidence, likely everything will be discarded as has happened many times over in every scientific field already.

You absolutely do not understand science.

Your concept of "everything we have now" being discarded is wildly misleading. Sure. Probably nothing we think we know is exactly right, but we have been on a long arc for a long time of becoming gradually less wrong about a lot of things.

Newtonian physics is pretty good at predicting physical outcomes. General relativity is better. And we have good reason to believe general relativity isn't quite right.

If we forget all of physics, we would absolutely be able to find these same ideas again, because despite their imperfections, for the most part they work. They are predictive. They draw an accurate, testable map of our reality.

You make it sound like scientists periodically just up and start over from scratch with an entirely new narrative. That's bullshit. Your presentation of science is bullshit.