You're supporting their point. You can't go to ChatGPT for knowledge you don't already have because it will confidently spout garbage, which is what was being suggested "whats new in java X". If you can build that bridge yourself then you aren't asking it for knowledge, you're asking it to format things for you.
I disagree, I use it all the time for things I don't know about. I then feed those discoveries into semanticscholar, scholar.google.com, wikipeida, libgen.is, etc.
I then ask it so summarize and ELI15. If ChatGPT is feeding you bogus knowledge then you are already consuming bogus knowledge over your existing channels. If you aren't including feedback into your understanding you are recording, not learning.