> The non-scientific aspect is that conclusions are drawn even when the variables haven't been controlled

Yeah, it is so strange when people say we should listen to the scientists, we shouldn't since scientists make all these much stronger claims than the data supports.

Instead we should listen to the data, see what it says, rather than the scientists who did the studies. And it is really important to note that the data doesn't necessarily say what the study author says it does.

Edit: Above is for social sciences, since they lack robust results. In the hard sciences were we have a lot more robust results it makes more sense to listen to those who know those results, that doesn't have to be scientists though could be experts like engineers etc.

There's no rubrik for grading scientific correctness. Just because controlling variables is more difficult doesn't mean we should abandon the scientific method and just talk out of our asses.