I think that just means https://blog.mozilla.org/en/firefox/ai-controls/ will be administrator controlled in Enterprise settings. As in, the admin can force-disable all that stuff.

Features aren't a zero sum game. Enterprise can have a set of features, and the consumer version can have the same feature. Turn the example around. Enterprise Firefox will render HTML. That does not mean the consumer version will have the ability to render HTML removed.

So the answer isn't yes. The answer is we don't know if they will or will not remove the feature from non-enterprise, but it doesn't seem likely.

Ignoring that a feature page for a tier can include features from other "tiers", they're explicitly describing central governance and configuration of this.

So the answer is no, no need for reading tea leaves and making stuff up.

And I mean, does everyone here know that Firefox is open source?

The answer is not yes, why are you spreading bs? It's just an extra feature item on the list, there is nothing that gets removed in the "normal" Firefox.