That is quite the leap. Can you explain the reason why Einsteins equations predict things so well if they are not correct? Why is it so good at explaining observations?
I'm not sure why there's so many evangelists who feel the need to defend it so hard. There's as many head scratchers as there are "proofs". And then quantum is just not even close.
Most of what you call headscratchers are not even problems. It is how things work. Time and space are related, and perpendicular to each other. Quantum field theory is quite verified.