But at what level of "proven" is it actually "proven"? That's where a disconnect lays.

I completely agree, heck there's also times when all the science is done perfectly but the result is incorrect because the people interpreting the data got Cause and Effect backwards... Or worse, when the data checks out, but violates the current paradigm so much that the academia of the time rejects it out of principle alone and refuses to acknowledge you. (This literally happened when we discovered germs, and the first person to pitch the idea of the Big Bang was mocked over how "religious" the idea sounded, so yes, there's precedent for this shit.)

Science does sometimes lie.

Hm, imo, science doesn't lie — scientists lie. It need not even be a lie — it could simply be a misinterpretation of data. As long as proper science was done, and documented, reproduction of the experiment will get to the bottom of its accuracy.

Question the proven truth all the time,cas long as you're not fighting against observations and evidence