Article felt pointless, maybe someone venting his frustration on how to pursue new things during or after a burnout.
Probably he needs a friend(s), at least a chocolate one (https://youtu.be/CISFw4o0j4U)
There's a certain number of modest side projects one must complete to end up with the breakaway project that leads to financial independence. I can't tell you what that number is, but it does exists and if you fail that many times, you will eventually get there. Or die first.
My point is that I don't think saying "try and you'll make eventually make it" is very accurate. Survivor bias makes many people say so, but the reality is that everyone should know that you may never get there.
It's helpful for motivation to say to yourself (and others) that if you stick to it then it'll eventually work, but it's never a guarantee.
Just keep making stuff!
I think the takeaway here is that chance plays a big role. So increase your chances by shippings lots of projects. And a tip to ship several projects is to stay emotionally, physically, and financially healthy.