You make good points but some people are knew jerking on Firefox's AI. One of them is client side translation which is really neat as I don't need to send the content to some Google ad data vacuum.

Another AI model helps differently abled people to have websites described to them using, again, a local model.

There is also Libtefox which uses the same rendering engine without the other stuff if you don't want it.

I consider it an important act to use non Chromium browsers as not to completely hand over the power of rendering web content to Google.