How about a statement from Haim Eshed, 2020, saying there is Galactic Federation saying humans are still too socially immature to join the federation?

What about the confluence of information in John E Macks books, where the aliens litterally said as much to witnesses? Almost all of Delores Cannon's books say the same thing.

Many experiencers have stated as such. Still not an unreasonable position to hold, given the evidence.