And you’re probably right. I just suggested a possible reason why they might crash.
If the claim was something like a single ancient craft was found buried miles underground then it would become slightly more believable because of the geological time scales involved, however the potential distances and timeframes these craft would have to potentially traverse are truly mind boggling. Claims of regular interstellar/galactic visitation of advance craft whipping around at mach 70 that randomly fall from the sky are just so far fetched and at odds with technological level required to make such a journey. Grusch claims the US alone has numerous alien craft and with the US making up such a small part of the earths land mass, would statistically mean these things should be seen crashing/flying around everywhere.