Would exhaust from site of the proposed power plant / data center flow to the Weber/Davis/Salt Lake Wasatch front areas that have the bad inversions?

Or is this far enough north and out of the way enough that it would not necessarily contribute to winter air inversion pollution?

I know that generating that much co2 in and of itself is bad. But I'm just trying to confirm if the concern of it adding substantially to inversion air quality is also valid

Valid. I certainly do not know myself. We will have to wait for the environmental impact study, or just wait for the real-world effects.