And so you look to non-scientists to explain the science to you.
Makes sense.
And proxy data isn't good science because...you don't think so, yet it seems good enough to get prominent publication in PNAS, (or Nature or Science)which rejects 99% of papers.
Proxies are a tool - a poor substitute for directly procured measurements and observations.
As proxies go, Bristle Cone Pines are about as bad a proxy as you can get... even Mann and the warmists admitted this - that is until Mann's infamous Hockey Stick was hailed as the smoking gun and holy grail - holy writ to be worshipped and defended to the death.
Of course Mann's data is complete nonsense, and has been proven to be so - but far too many "scientists" had already climbed on board without due consideration, and were forced to defend the indefensible. That is not science, that is cronyism, pride, defending reputations, fraud, and just plain lousy science.
True science is open for all to try to falsify. Skeptics (skepticism being the essential ingredient in scientific inquiry) come along and say okay - give us your data, and we'll try to falsify it - if it holds up, fine; if not, it is out.
What do Mann and the fraudsters do?? They try to hide behind legalism, they delete data, engage in witchhunts and character assassination, rig the peer review process, on and on... we have irrefutable evidence that this is exactly what they did.
If their science was accurate, it would stand up to attempts to falisify it - but of course they know, and anyone who has any scientific training knows, the data they are presenting is fabricated junk.
That said - there are $Billions and $Billions to be had in the name of defending the orthodoxy. Anyone who doesn't play along is labeled a heretic, ostracized, and has their funding cut off. It pays to play along - whereas on the other hand, not playing along can cost a scientist dearly - and not just funding, it can cost them their job.
What the warmists/alarmists are doing is despicable.