It has helped many junior developers in teams I have run perform better, become happier and enjoy their job more. Which as a tech lead makes my job easier. I tend to write on more junior related topics ever since I ran a team of junior developers. I noticed they constantly had the same questions and feelings that I did when I was a junior. So I began writing on topics with more of a junior/entry level focus. This lead to all my team members reading them, reaching out to tell me just how much it helped to know that their struggle with x,y,z is normal. Ultimately it lead to a fantastic development team, a great supportive environment and most importantly it made them feel that their tech lead was just another developer with the same struggles at one point.

A blog has also made interviews substantially easier, which is great.

https://errolhassall.com/