Hold on there a sec: WHAT?!
Engineers tend to solve their problems differently and the circumstances for those differences are not always clear. I'm in this field because I want to learn as many different approaches as possible. Did you never experience a moment when you could share a simpler solution to a problem with someone and could observe first hand when they became one of todays lucky 10'000[0]? That's anything but arrogant in my book.
Sadly, what I can increasingly observe is the complete opposite. Nobody wants to talk about their solutions, everyone wants to gatekeep and become indispensable, and criticism isn't seen as part of productive environments as "we just need to ship that damn feature!". Team members should be aware when decisions have been made out of lazyness, in good faith, out of experience, under pressure etc.