In other words, the science is far from being settled, right? Alarmists use modeling to argument their case, while real scientific methods are rarely used!
Science is never "settled" - there's always room for refinements. But the amount of room rapidly diminishes.
Gravitation was formalised by Newton in the seventeenth century. But the science wasn't "settled" - it turns out that Newton was wrong, as anyone could observe by making sufficiently accurate observations of the orbit of Mercury around the Sun.
However, despite the fact that the science of gravity wasn't settled, a person who tried to argue that the discrepancy between Newton's predictions and Mercury's actual orbit meant that sometimes rocks might fall upwards, was still a blithering idiot with zero grasp on reality.
That we don't know every tiny detail about what is happening to n decimal places is not permission for fuckwits to declare that we cannot possibly know anything, and that therefore their crazy nonsense is just as plausible as the scientific consensus.