Unfortunately, the citations are generally quite low quality and have in my experience a high rate of not actually supporting the text they're attached to.

In my experience they just add random links at the bottom that are often unrelated to the response they give; there’s absolutely no guarantee that they did read them or that their response is based on them.

Sometimes they hallucinate them, or if they exist, sources include blatant nonsense (like state owned propaganda, such as RT) / don't support the claims made by the output.