I'm shocked this manager didn't have you fired. I would never tolerate someone doing what they want instead of what I instructed them to do. When the leader says follow, you don't choose a different path, even if the leader is wrong. Eventually, if they genuinely are incorrect, they'll be dismissed due to poor decisions and performance.
I tell you this as an older person because you won't be able to push out everyone. You'll make this mistake with someone, somewhere, in another company, and they'll fuck you six ways from Sunday for it. I had to learn this lesson the hard way. I lost one of most enjoyable jobs I ever had by doing not only what I wanted to do, but what I knew was correct. I was even proven correct, but I ignored my boss and in doing so sealed my fate.
You're definitely correct to have put "won" in quotes, because what actually happened was you got lucky.