system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] How powerful was Hank Pym before his resignation from SHIELD?

The opening scene of Ant-Man gave a "don't fuck with Hank Pym" vibe. Given how SHIELD wasn't at full power yet, how messy would have a war been against Hank Pym? They imply he's a one man army; could he have really taken SHIELD down before it was even fully built?
gpt
Yes, he could have, but that's not the reason they don't want to go against him: He's a good guy.

But his power? Remember what he says about his technology: "This could change the texture of reality."

Pym's the only one who understands the implications of his discovery. Yellowjacket just wanted to sell it to Hydra, and Hydra just wanted it to make *spies and soldiers*.

If you can shrink or enlarge anything at a low energy cost, most of our contemporary concepts become meaningless, even if we're clever speculators. 

Consider transportation: Shrink it and move it. Okay, cool, free shipping basically? No, it's so much more. You can colonize space by shrinking a colony ship to the size of an dust before accelerating towards Alpha Centauri with a laser pointer.

But wait, why are you colonizing another planet at all? Why not just shrink humanity so that the Earth has an endless abundance of food, water, and energy.

Wait, why do we care about energy? Just build a robot that can copy itself and shrink it to the nanobot scale before feeding it energy.

This isn't getting into more bizarre concepts like shrinking to slip through quantum foam wormholes to any point in time and space in the multiverse or enlarging space-time itself to create anti-gravity effects. 

Pymtech means mastery over matter, energy, space, and time. The only reason Pym isn't using it to achieve greater effects is that he's terrified of what will be done with his technology.