Yes, the Philadelphia Flyers once had Sergei Bobrovsky as their goalie and now he has won back-to-back Stanley Cups. Who cares?
It’s a perfectly natural thing to boil down almost every single aspect of almost every single sport into a win or a loss. Games, trades, free agent acquisitions, hirings, firings — just everything was either a great win for your team or a terrible loss that was a mistake. It’s natural but it’s flawed and most of the time just wrong.
Context is, unfortunately, everything. There are reasons why teams do make those moves that could be seen as mistakes.