I think you misunderstand. What we want is compelling evidence of
aliens or their craft. So a bunch of observations of
things that haven't (yet) been explained doesn't fit that bill.
Things that haven't yet been explained are things that haven't yet been explained. We've had reports of things that haven't yet been explained for decades. Centuries.. Sometimes they eventually get explained and it turns out to be something really mundane. Like a sensor malfunction. Or a swan in a blizzard
What we haven't yet had is something unexplained that turned out to be aliens
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It's either remained unexplained or been debunked.
The people saying, "It's 100% aliens and I've met them and we played chess for a few hours before they gave us a super-advanced blueprint for a sentient coffee machine," don't tend to substantiate those claims with compelling material evidence. Like putting those objects on display somewhere.
Maybe there are people in the military who believe in aliens with all their hearts. Still not good enough until we
see that sentient coffee machine and drink from its many-tentacled nozzles.
What it comes down to is too many false starts. Too much crying wolf. Too many hoaxes. Too many grifters. Too many crazies.
Show us the aliens or we'll just carry on playing XBox and not caring, basically.