In context, the “doing things” and “opportunities” that we’re talking about are jobs, careers. So by promoting the idea that one must work harder or longer to get or keep a career that they’ve already built sounds like a path to opt-in servitude.
I'm saying this as somebody who most of the time has some side project going on.
Perhaps for top-paying companies, but that's never been my experience when I was involved in interviewing and hiring.
For example, you can’t “conscious long-term effort” your way out of being stop and frisked by cops because you were walking while black.
This setup isn’t even good for employers. Having your job as your hobby doesn’t automatically make you better at your job.