The mistake you're making here is assuming that

> The hysteria over "assault weapons" basically outlawed guns that _looked_ scary, while not meaningfully making anyone safer.

This wasn't the goal by the congresspeople, and that them having fired a gun would've changed that goal.

That was the goal. They knew they weren't going to be able to pass any kind of legislation that actually msde people safer, but they wanted to look like they were "doing something".

This is incredibly common. It's the primary reason behind the TSA and its continuous expansion, for example.