You're right. We also have proverbs like "two heads are better than one" and "standing on the shoulder of giants" so people recognise that both sides are important and have their value.
Right now, I'm working on my own on a personal project attempting to do something a little novel and I appreciate being able to go back and refine my ideas/previous code based on things I learn and additional thinking (even rewriting from scratch), when I'm more likely to face friction (like "stick to the suboptimal approach; it's not that bad") and cause trouble for teammates if I was working with someone else. So the value of working alone speaks more to me currently than the value of working in teams, but they both have their place.
Right now, I'm working on my own on a personal project attempting to do something a little novel and I appreciate being able to go back and refine my ideas/previous code based on things I learn and additional thinking (even rewriting from scratch), when I'm more likely to face friction (like "stick to the suboptimal approach; it's not that bad") and cause trouble for teammates if I was working with someone else. So the value of working alone speaks more to me currently than the value of working in teams, but they both have their place.