Wow! I think regardless of the junior this is a failure on the authors part not to handle this internally and instead write this blog post. He could have mentored the new guy, and he could have taken it as an opportunity to reflect on his teams practices.

To the actual commentary; I might be wrong but it’s giving me dogmatic vibes. All the things mentioned can be ok, sometimes good, and also bad in the wrong situations. Context matters. Doing the things described (in moderation) is not by definition bad.

This seems like a perfectly wasted learning opportunity for everyone involved. I would strongly urge the author to reflect on this as an important part of being senior is to lift other less senior people up so they can be productive and progress in their careers.