To see everyone around you as a predator.
You’re there to do work and be helpful to people. Do it if you can. If you can’t, explain why and don’t do it.
I can’t imagine someone who sees their colleagues as predators is much fun to work with. There’s going to lots of attitude and angst. Steer clear of employing this type of developer.
But, the cynical take and the one I would advise anyone to take who wanted to maximize their compensation and was early career is that you work to exchange the maximum compensation for your labor to exchange for goods and services. “This type of developer” is the only one that gets ahead in BigTech or adjacent companies.
Just because it’s good for “career optimization” does not make it less of a strange mindset to view your colleagues as predators. The article also puts all of the blame on the so-called “predators”, when it should be blaming the organization’s culture and leadership if helping others is viewed in this way.
But the author is very explicit about who the predators are - PMs from other teams who use back channels to ask you for help and other non junior developers who ask you to troubleshoot or do work without doing any research themselves.