As a barely competent Dev who just became senior by actively helping out people who looked like they were struggling in the org slack, I firmly disagree. It's

As a barely competent Dev who just became senior by actively helping out people who looked like they were struggling in the org slack, I firmly disagree. It's led to friendships with many many people (and their managers) and a broader understanding of lots of things and is definitely the key to my own career progression. It's most definitely not my code!