> Don’t get a job.

All advice is circumstantial, and this one seems particularly painted by OP circumstances.

When I got my first job, I was living paycheck to paycheck and partially supporting my family. I can't imagine how could I possibly quit my job to pursue side projects. A few years later I did work in a side project that went nowhere for 2-3 years in a manner similar to how OP describes.

Sometimes dedicating yourself 100% to your own venture is the right call, but this piece seems to assume this is a choice everyone can make easily.