Contrary to what one might assume, the most chaotic MCU characters aren't generally the villains. What makes the MCU heroes so gosh-darn lovable is that they're all a bunch of goofballs, even the ones with intense military backgrounds that seem a little prickly on the outside. At the end of the day, these characters all make a lot of wild decisions. And, while some of these decisions are completely terrible and end horribly, a lot of these out-of-the-box ideas are what lead to the Avengers' continued success.
Seriously, what other superhero team would resort to a time caper to reverse their biggest loss to their biggest bad? With characters like Scott Lang and Peter Parker around, there's no telling how bizarre an idea might be or if it's even going to work.