If Gary dislikes crypto, could he just deny the ETFs and prevent crypto to pump?

Gary dislikes crypto. The easiest way to crash the market would be very easy for him...he could just deny the ETF in the last minute.

After all the hype and pumps, the market would be shocked about a sudden ETF denial. A crash would follow which would make Gary very pleased.

So could he just do it on his own or are there other factors about the approval which he cannot control on his on behalf?

If we try to imagine us as anti crypto super villian, he easiest way to hurt crypto market is by simply saying "NO" to the ETF.

And if anything goes south personally for him, he could say "YES" later anyways? Am I thinking too simple or what are the obstacles?