The Google-versus-AI point in there is the one I'd hold onto. Searching made you read three wrong answers before the right one, and the wrong ones were where you learned what the problem actually was. Getting the answer straight away skips that without it feeling like anything is missing.

What I'd say to a junior is to keep reviewing the diff properly rather than reading the summary of it. Reading code you didn't write is worth getting good at either way, and reviewing agent output gives you more practice at it than any job I've had before.