If ChatGPT is used as an advanced search engine, the speed at which we get answers can indeed make us lazy, and our memory may not be as strong. However, cognitive ability is never determined by the tools, but by how you use them.

If you see it as a crutch, it will weaken your legs;

If you see it as a barbell, it will strengthen your brain.

So we use it as an aid, allowing our own thinking to lead, which will add extra value. If it's just mechanical copy-pasting, it only shows that the brain is devoid of content.