I haven't used Kagi's Quick Answer very often yet, but when I do, it always cites its sources and I often end up clicking into at least one of the sources to look for more detail or context.
Bingo. I nearly always use the quick answer, and then will use the cited sources to click onto the page to either read more or verify that the summary was accurate (and it always has been in the 300+ times I've used it).