Given that they're "Unidentified" aerial phenomena observed during the day to day operations of the US military I'm not particularly surprised congress isn't informed about it every time this happens or "being kept in the dark" as some are putting it. Imagine if every time someone in the national guard looks through binoculars and thought they saw something but couldn't figure out what it was, this was a matter brought before Congress who are supposed to be busy deliberating as democratically elected representatives. There's a line where, without knowing particularly much about how something like this is supposed to operate, I can understand one might expect congress to be informed, enemy aircraft confirmed breaching airspace for example or even a UAP that is so strikingly unusal and incontrovertible that it might need to provoke a military response perhaps?

Claims as bold as this Grusch guy's being withheld would definitely be something to be upset about but there's so far little (in the public realm) with which to assess the likelihood that they're anything but just claims.

I've also read that he appears to have been allowed by the Pentagon to go on record with his claims which would seem to weaken the case that he's out here dropping bombshell secrets no one wanted us to hear. The claims tend to be careful as well, as he doesn't claim personally to have been involved with any of the programs he said existed nor have seen any of the things supposedly recovered, merely saying he's been made aware of them and seen some documents. He didn't repeat all previous media claims in Congress when pressed to do so and has added different and new claims in different interviews.