I’m trying to summon my inner Ben Shapiro here. This isn’t my opinion but my understanding of what he has said on the subject.

While Trump lies a lot, he’s fundamentally a bullshitter, which is different. A liar knows the truth but chooses to deceive, whereas a bullshitter doesn’t care about truth in the same way. When Trump says something like, “We’re going to withdraw from NATO,” he’s often expressing a sentiment or creating leverage rather than making a literal commitment. He treats politics like business deals, where you start with an extreme offer, then meet somewhere in the middle. He has argued that in the case of NATO, for example, this approach worked: other member states did increase their defense spending (though the war in Ukraine played a role too).

So, the point is that Trump’s statements should often be taken as rhetorical posturing - ways to push for certain outcomes - rather than literal promises. From a Republican perspective, his actions during his first term ultimately aligned with their goals, which explains their relative tolerance of his exaggerations. In contrast, they see Kamala Harris (and Biden) as engaging in misrepresentation that has led to policies Republicans find harmful, so there’s a greater focus on what they see as her inconsistency between words and actions.