Being a leader is hard. Being a good technical leader is harder. Programmers are like cats and their opinions are more important and refined than anyone else's. And I don't think it's sustainable to work in an environment where your every mistake or bad day will make you seem like a dipshit to your team. It can be demotivating to work under someone who has a toxic attitude problem, for sure, but it's also hard to be perfect all the time.
One thing I would add to the Humility and Empathy section is that you don't have to be all these things all the time. It's okay to have a low-energy week where you don't feel up to mentoring junior developers. It's normal to get frustrated when you review code that consistently exhibits the same patterns and bad habits you've been coaching your team out of for months. Part of building humility and empathy is creating a team where it's fine to be vulnerable: the team knows you're having an off week, that your energy is low, and they trust you that you're going to recover and bounce back from it.