Of course it's not, but that doesn't mean it's somehow worthless. The Fermi-Paradox and the vast body of works - and potential solutions - surrounding it are one of the most sound logical hypothesis - or rather a series of logical conjectures - about how in vast universe full of opportunities for life, we have so far observed none. It have been the subject of a mountain of serious scholarly work for the past 70 years since it's postulation, and to this day scientists in the search for extraterrestrial life are still posing various answers to it.