Truth, if it exists, when held in the absence of justification, is attack surface. If you're willing to believe something because it's true even when you can't summon ample justification for it, then you're a high value target for manipulation. This is because unlike a skeptic, whatever programing gets past your is-it-true filter is permanent.

Whether or not they exist, absolute truths are not pragmatic for use outside of religious talk. Let argument be sufficient.

Which is a huge problem. It reduces politics to a high school popularity contest which excludes discussions of substance.

Real experts lose the debate because they're not trained in rhetorical manipulation, and they can easily be demonised.

The idea that experts with PhDs and decades of experience may have more skill and experience than an ordinary person offends the ignorant. ("You don't tell me what to do.")

The result is popular support for disastrous self-harming policies.