Completely disagree.
Cecil constantly repeated "Go home Mark."
Mark is the most powerful being on the planet, and he was obviously on the verge of losing control and killing Cecil.
"You're scaring she shit out of me."
They're living in a Post-Omni-Man-Rampage world which killed thousands, and they're preparing for an invasion against the Vultrumite Empire.
Say what you want about Darkwing & that crazy scientist's actions and creations, against what they're up against it'd be a poor strategic decision to not have them on the 'active player list' and just have them rot in prison.
Mark is 19 years old, and quite obviously a hot head after all he's been through. Emotionally compromised.
Cecil is planning on having all assets available in a war against the Vultrumite Empire... which they've only seen two aggressive Vultrumites on Earth, and they beat Mark quite easily.
"We can either be the good guys or the guys who save the world."
In other words, whatever extremely small chance Earth has in the upcoming war will easily become no chance... if they hold their moral principles and sense of justice as a higher priority than victory.