> for antitrust reasons?

well, a benefit is a benefit. It doesn't really matter how it manifests does it? It's not a donation, as it is not altruistic.

But then I’m not the product? The government is basically forcing google to pay my browser developer, how does that make me the product it is bad for me?

You are still "the product" even if google derives secondary benefits - because you are using firefox. Google doesn't pay the other forks of firefox money (at least, as far as i know). It's because you aren't using those browsers (you as in the royal you).

I didn't say you being a product is bad - but it does not align customer with software company. You may be OK with being sold as a product to google, as this relationship currently isn't damaging. But what if a future offer which would damage you is taken by mozilla because it's profitable?