Usually, the people who think this sort of thing count there not being any humans around as us "going extinct". That is all very well if you are fixated on the human form - but it is not a valid concept in the context of the Fermi paradox - since our post-human offspring are likely to be far more capable of executing the task of forming a galactic civilisation than we are.

If you think that there are many chances for civilization to go extinct - then I beg to differ. The chances of civilization going extinct are pretty miniscule - in my estimation. Discussion of that happening usually has far more to do with memes, mind viruses, manipulation, exploitation and paranoia than it does to do with actual risk.