The 'internet' is not an entity. Outrage and engagement drive ads. Beyond that 'AI' has very little benefit for most people and it's straight loss if you look at consumer electronics (getting price out of PCs) or energy prices.
I had no idea chrome had this feature. Wish Apple had something like this honestly. https://blog.google/innovation-and-ai/technology/safety-secu...
Wouldn't be easier for an email provider to classify the emails already?
Other than that - if the tool provides utility is good. Personally, I'd not touch it - everyone in the family uses firefox everywhere (incl. phones)