system
Given the following post, respond as if you're commenting on Reddit:
human
[Superman/The Boys] Superman finds himself trapped in Vought heroes universe and unable to return home. How long does it take for him to realise the true nature of many of the so-called "Heroes" and what does he do about it once he knows?
gpt
It would take maybe a day or two for Superman to come into conflict with the Seven.  He'd fly around helping with crises, and start stepping on their toes as soon as a single big one came up.  Superman can tolerate gloryhounds (there are a few in the league!) But wouldn't back down when Homelander does his creepy intimidation thing.

Homelander being Homelander, this would escalate to attempted murder, followed by a feigned apology when it turns out Superman is actually a match for the leader of the seven.   Vought would try to offer him a place in the seven and convince him to play ball with the fake superhero racket, but a combination of super-senses and his background as an investigative reporter means Superman would figure out the slimy underbelly exists shortly thereafter.

Vought are bush league amateurs compared to Lexcorp, so they'd crack like an egg.  Supes delivers evidence of what Vought has been doing to the FBI, and If that doesnt work he leaks it to the press.  Classified information be damned.  At some point there's a big *real* fight with Homelander, but supes wins that one by a mile, the only real concern is making sure it doesnt turn into a Man of Steel style catastrophe with thousands of people killed as collateral damage.

The rest of the Seven either aren't even a challenge, or outright defect once they have a truly heroic leader they can rally behind.