Not really? If one seeks to gain basic information these are reasonable sources but they are not authoritative, nor are they deep enough to generate deep and rich understanding of most phenomenon.

I was taught since at least high school that you don’t cite encyclopedias as sources because they are not sources - they are summaries of sources.

LLMs are similar but worse. They are a statistical approximation of truth, without a concept of truth. They are fuzzing sources that you and I have access to already. I find calling that hand off of agency and responsibility “being informed” deeply disturbing.