Well the one he saw was probably the most famous in the world. He also can have a choice of slight freak out it is her, or flirting.
It does state there are people with powers and some don't become heroes/villains, however I would assume that the laws would also have them not use their powers.
Arguments could be made on use of powers like super strength would make a moving company have unfair market advantage, or like levitating food stuffs would probably make the food inspector's job a pain.
Plus it happening out of nowhere, as was mentioned it was only 20 years since they showed up and that things like patrolling is to build rapport and make the normal humans feel safe. So it would be less likely for them to show off powers unless it was part of their schtick.
I do see your side of it too though.
I don't really understand where you're coming from to be honest. It wouldn't make any sense to make super powers illegal, especially with powers that might not be toggle-able. To bring up super strength, why would that be a problem? A moving company having someone who could lift anything without the need for mechanical assistance really wouldn't be much different from a company using heavy machinery, or hiring professional body-builders. If anything, super powers would make the individual a sought after commodity in the business. It wouldn't make any sense to place restrictions on where someone could work because he would excel at it, especially since super strength is often depicted as something the user can't turn off and has to learn how to live with and control by just being gentle with everything. "It is like the world is made of card board", to quote Superman.
Part of a competitive market place
is the natural gifts one is born with. It would be like saying someone isn't allowed to go into any scientific field because their IQ is too high, so it wouldn't be fair to non-genius people. As for the surprise, 20 years is plenty of time to get used to such a concept, especially these days with the internet. An entire generation of young adults would have only known a world
with super powers at that point, let that sink in.