For some reason, I'm not that worried. I would be worried if this was concerning normal users but not in this case. With the Blackrock, and SEC involved into all of this. I can't imagine them even trying to pull such a move.
Regardless though, one should not store his funds for a long period of time in any exchange.
This has always been the main golden rule here in crypto space. It might sounds basic and repetitive but this is something that will really be saving up your ass on losing up your coins.
"Not your keys, not your coins" this is really that a line that often heard about and this is where newbies should really be thinking off when it comes into this aspect.
As for those events talking or involving those institutions then just like you then im not really that having any concerns nor really that being mindful on whats happening around.
We do know that there are really that tons of drams thats happening into that area on which it would really be that obviously shows that they are really just doing those casual stuffs around.
As for security of coins then better always choose on storing up on non-custodial ones on which this is really the most basic thing that you do learn on crypto space.