Those relevant excerpts and similar features have been pretty detrimental to search click through rates in certain areas (they’re known as “no click” searches in the industry)… but the alternative is to block google bots entirely, which isn’t viable if you’re operating a content site since google has an effective monopoly on search. Also, those features do still link out to the content they’re showing on the SERP, whereas the chat ai doesn’t and gives the appearance that it’s the source of the information.

Your point about vocabulary is fair