Do people making that argument also find ad blockers even ten percent as horrible as this? They both ultimately have the same effect, which is your web browser not maximizing someone else's profits by denying them a revenue opportunity.

I'd be curious if the link summarizer in Firefox runs a model locally or calls some remote API. Most current machines ought to be able to run an appropriate LLM model for that task.

It's more of a concern with google summaries that show up at the top of search results because it completely removes the need to click on any of the websites it pulls from. Ideally a link summary just lets you figure out which link you need without clicking on and looking at each one.