This just blocks AI features within Firefox.
The feature I would really want here is a switch that blocks AI summaries, overviews, etc. on any websites you browse.
Unsurprisingly, ublock is still the best extension to do that, there are community driven lists that hide summaries and spam websites.
That's massively out of scope for a browser, that sounds like something for an extension.
Much of the content online is already AI generated, and many websites have their code AI generated, so you'd soon be left with nothing but blank pages. :)
That's the job of uBlock origin.
Eg here's a list
https://github.com/laylavish/uBlockOrigin-HUGE-AI-Blocklist#...