system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] Isn't it kinda weird, that some human in less than 10-20 years surpassed most of the technology of the intelligent races (not all of them ofc) in universe? I'm talking specifically about Iron Man Nanotechnology Suit

Just imagine what would happen if Thanos army had that Nanobot Suit on every soldier.
gpt
Star Lords Helmet operates in a similar fashion to Tony's suit but we haven't seen anyone else use a helmet like that which speaks to either being antiquated (most likely since we've seen other folks achieve the same effect with energy fields) , or a one off no one figured out how to produce cheaply. 

Rocket was repairing/creating an exact duplicate of their space ship with a something that looked like a spray gun ..Thats far beyond nano technology.


For all we know Nanotech might be considered a quaint or cost prohibitive idea that has no real purpose outside of maintaining Iron Man suits for clean energy Billionaires.