Truth is anathema to liberals/progressives/socialists/Marxists/feminists/new-agers.
Well, yes, because if they acknowledge that truth exists,
it can easily, logically, be proven that they don’t have it in their belief systems.
Better to believe that there is no absolute truth, and that two contradictory things can be true at the same time. Actually had a lefty say that to me, because she knew I’d be able to logically disassemble her entire belief system otherwise.