Chiaki's feed

Okay just finished chapter 3 so I can't judge much but one thing always irks me with these stories.
Whenever they regress and want revenge, they make it so obvious that they're stronger and more intelligent than the rest and draw as much attention towards them as possible. I don't really understand why, wouldn't it be smarter to do average, train in secret and be underestimated to stay out of their radar?
If they take you for a fool, I'd be easier to manipulate them, maybe he'd have less opportunities but he can catch people off guard and finish them off way easier.
This seems like a smart tactic so I'm left wondering why they make the regressed Mc such an obvious powerhouse to everyone.