I think the fact that the SOS were so over the top was part of the point. A major theme put forth in the first issue is how insanely polarized we've become as a country when it comes to political issues, which is true in real life. I mean we have a presidential candidate who got thunderous applause for stating his insane plan to deport all undocumented immigrants (good luck with that) and then magically put up a massive wall on the border.
The costumes and super weapons are silly, sure, but their rhetoric isn't too far off from what I hear from people in the real world.