Personally I'm pissed at both. A large jump in requirements without warning is bad, if I want to avoid it I now need to take immediate less considered actions or get stuck with the consequences. Plenty of decent software actually lets you decide what plugins to install for added functionality, chrome actually has a extensions store that they could have put this crap in.

Yes it's also that it's AI and mostly that chrome is foisting off all the cost of that AI model to me and other users. Without warning and explaining what this model is, is my workplaces power cost going to be up 10% because of whatever they want to run it for? Who knows.

There'd be a lot less complaining if they'd actually warned and less still if they asked.

I'm picturing a splash screen announcing the feature(s) it enables, with a Download button