Earlier quoted context omitted.
I’m not sure of your point. So a job I got 13 years ago largely through a contact isn’t how things work today? As in my most recent example.
To clarify - a random SWE's random peer from 25 years ago is much more like to be in an influential senior position, than a random SWE's random peer from a job 13 years ago, or a random SWE's random peer from a job last year. Your friends are statistically more likely to be closer to the top of the pyramid than mine, and my friends are closer to the top than a fresh no-name college graduate's.
Connections obviously aren't the only way to land jobs. But, especially in leaner times, having someone you've worked with lay eyes on your resume certainly helps.