I erased my comment because was not positive but here are my 2 cents... The author comes out as a arrogant. Looks like he expects his team to be skilled but it

I erased my comment because was not positive but here are my 2 cents... The author comes out as a arrogant. Looks like he expects his team to be skilled but it's crystal-clear that he wouldn't follow a leader that is less skilled than he is. My take is that if the author cannot explain what BigO is in 5 to 10 minutes and how to use it effectively, providing simple examples and leaving room for questions, he is absolutely NOT fit for the job - I don't think he understand what a team leader actually is. I had 4 team leaders/CTOs so far, the first was extremely technical (probably the best, I've never came across another DevOps that was so well-rounded technically). The second was less so, but he was extremely well rounded in managing people. I came to appreciate his ability to express a concern or point mistakes I've made without insulting me in any way. Being a leader is about taking technical decisions but first and foremost it is about teaching and managing ppl.