It's clear that the general consensus of those posting is that there's no there there. It's also clear that some 100,000 reports have occurred since 1950 (google Bard). If we dismiss 99% of them as explicable, that still leaves 1000 reports. There are a vast range of reports from police and military witnesses. Clearly, whatever it may be that is at issue is a complex phenomena not merely reducible to 'spaceships from elsewhere'. It is also clear that around 3% of reports include the appearance of beings of some kind. There are historical documents that mention similar phenomena over a vast span of time. It is clear that there is a 'there' there; what we know of the world and universe is clearly less than 1% of what is accessible to human knowledge. It's completely reasonable to have a high standard of proof, it's also reasonable to speculate about the phenomena and actually talk to people who have experienced something related to it.
As regards the AARO, I listened to the recent Senate Armed Services Committee hearing on the AARO. Three senators and the head of the AARO were there. Not exactly a crowd. It was made clear that the AARO has not received sufficient funding to do... much of anything at all. The office is 9 months old and has had to fight to get enough funds to simply operate. Dr. Kirkpatric was at pains to declare that their standard operating procedure is to dismiss everything they can, and anything they can't can be excused as 'not enough data'. His attitude was basically scientific, and he was extremely prejudiced against the idea that anything inexplicable has been or will be going on. It is not in any way clear that the Pentagon and other military branches of the USG are including the AARO in anything. It appears that there's no actual mandate that would require anything being reported to the AARO. So I don't think they're likely to be included in anything that might be classified, if and when they are included in anything at all.