I think that depends on how small/big that ‘element’ is; most come down to ‘people in power lie to us’ and yep they do, just not on this scale or about this, but the small element of lying stands.

I don’t think there is any larger truth in this like the flat earth conspiracy, moon landing conspiracy or many of the others outside ‘people in power are lying to us’ in the general sense. Problem is that conspiracy believers use this to prove their side: people in power lie to us about X, hence they lie about Y (aka they lie about everything).