We won't get a disclosure because it would reveal all kinds of fucked up stuff.

>Yeah aliens exist and they're actually not allowed to fuck with any evolving species without their consent.
>However we gave them the permission to abduct humans in exchange for tech
>They occasionally mutilate people and drop them from great heights, or dump them into lakes and rivers while they're unconscious
>Millions have been abducted and have implants in their bodies
>Aliens also hybridize with us for who knows what reason, human DNA is super impressive or something
>They occasionally implant fetuses into women and then take them out after a month or two.
>Oh yeah and we have had a free energy source from the crafts since the 40s, but we decided to keep the scam energy market going and tens of millions have died because of that.
>And there's a shadow government in every nation that has been constantly briefed by the US about this subject and they operate on their own, not beholden to your elected officials.
>Black projects eating endless amounts of taxes? Sure they are a thing.
>Btw nukes don't work either because these guys can disable them, so hot conventional war is back on the table.
>US government has also participated in some human abductions under the guise of presenting themselves as aliens.
>Yeah fairies, bigfoot and werewolves are a thing too along with other folklore beings and humans are psychic as fuck, there's another can of worms for you.

List goes on.
There's so much shit attached to this subject that goes beyond just the fact that aliens exist, it's very understandable the systems can't disclose their existence.
I do hope that the stigma of this being nonsense disappears to an extent, so many people start looking into this that they simply can't hide it anymore.