It's still a simplification, You're seeing it backwards, They didn't create it that way. As i said, Concept and Atmosphere that then shapes the plot, Not the other way around.
They may not have intended it that way, but that's a little irrelevant if it comes across that way.
I'm not sure what you can say is truly a different atmosphere, but as far as Concept... SHIELD wanted to create a safer world and the power they created fell into the wrong hands. Tony Stark wanted to create a safer world and the power he created fell into the wrong hands. The heroes of the world wanted to create a safer world (in Civil War) and the power they created (by surrendering their identities) fell into the wrong hands.
Giardians, in the other hand, is a theme about the power of friendship, as goofy as that sounds. And it was a great movie because of it. Not that every movie needs to follow that theme or even a unique theme... but three times in as many years just seems risky.
Who keeps greenlighting these projects to keep the world safe by an over-reaching oversight system in the Marvek universe? Are they not watching the news?