Again, if you're going to compare Adames and Hiura, then you definitely have to add defense to the equation. Adames' place in the organization and lineup is relatively secure right now because he plays GG-caliber defense at the most important position in the infield and he has a longer, more stable track record with the bat than Hiura.
I already acknowledged your DH argument. It's a tall task to add a DH-only player to the roster, given CC's preference to rotate players at DH (Yelich, Contreras, etc.), and especially when Tellez is due activated in the coming days.
And Luke Voit does, in fact, have an OPS over 1.000 in AAA. (1.035 in 156 2023 AAA ABs). Why posting Hiura's statline every time he has a good game (while conveniently ignoring his statline since he came back from injury) doesn't help your argument.