100% - it's shortened our attention spans and ability to focus on a single thing.

Internet made us dumber by overwhelming with information. If we allowed it of course.

  I consider that a man's brain originally is like a little empty attic, and you have to stock it with such furniture as you choose (Sherlock Holmes)

However what I mean is, once we start relying on AI, we will never know things for sure, always will need to have the AI asked and no knowledge or skills will we have on our own

Some of us, definitely.