I recently followed a rabbithole on media reports that the recent California wildfires are due to climate change. The underlying study driving the report worked like this: They took a time series of the number of acres burned each year in a part of northern California and used a regression to predict it based on a number of climate figures-- air dryness, wind speed, mean temp, max temp, etc. After finding coefficients for their regression they took an off the shelf counterfactual climate model that predicts the climate without human input. The difference in acres burned according to their regression were then attributed to climate change.
An obvious issue, out of many, with this approach is that if you plug in any inputs with a trend over that time-- say hours spend viewing porn online-- the regression is going to end up with non-zero coefficients on it and you could walk away with conclusions like "internet porn viewing is causing wildfires".
If you knew ahead of time that these climate stats were actually the main drivers of wildfire then this approach wouldn't be a crazy method to estimate what might happen under different conditions. But this approach cannot tells us if those inputs are drivers, much less the main ones.
A generalization that threw in a bunch of additional predictors around population densities, forestry management data, etc. might get closer-- but the data being fit was already so sparse that it was probably already overfit. And at best the result would still only be as good as our ability to speculate and measure possible causes.
The question of human climate change's impact on things like wildfires is an interesting, important, and very difficult one. I don't fault the researchers for trying a method that might say something useful, but to take that kind of result and treat it as an established fact and drive public policy from it seems foolish indeed.
I'm sure that not all of these sorts of conclusion are equally dubious but unfortunately with media, politicians, and the general public so science illiterate that they're unable to engage with this research on its own terms we really can't trust that they're not without going and looking case by case.