Honestly, The Super Earth Flag not giving a buff is the unrealistic part.

So you're telling me this government who want to control everyone into being the ultimate patriot to serve their own means doesn't have their flags emit some kind of sonic wave to make people calm, reduce their stress or agitate them at the sight of certain Non Super Earth aligned forces?

Get the fuck outta here with that nonsense. SE is the type of nation to make it so whenever the flag blows in the wind majestically it releases tiny crystals that when inhaled get people addicted to seeing the flag wave. These people turned playgrounds into anti-orbital defense cannons, you really gonna tell me their flag isn't secretly empowering it's people?

Honestly, that's where my suspension of disbelief breaks.