If you where a republican investigator in charge of figuring out if climate change was a problem and decided to not actually do any fact checking because “everyone knows it’s bullshit” you would be an idiot.

In the same sence, someone tasked with looking for WMD in Iraq would be an idiot to simply go “well everyone knows there aren’t any” and not checking the facts.

Point is that no matter your political leanings, there is no such thing as “everyone knows” when doing investigations you look for facts and evidence.

And sometimes that’s hard because there isn’t any (Iraq) and other times that’s easy because there are tons (climate change). But no matter the case and your political affiliation if you skip the facts and rely on public sentiment you’re being foolish.