No. They don’t actually use sources and can’t tell you why they said what they said. This actually reverses cause and effect the source is part of the inference and since it didn’t and in fact can’t go and read them frequently contains both imaginary sources and sources which don’t actually support the assertion.

The ability to evaluate the source requires the same skills and information as the production of the original text would have required which means perforce if you use chatGPT to produce text which you lack the skills to produce you also lack the skills to evaluate it.

You COULD go and read primary sources and in turn evaluate it but at that point its not that quick.