Optimize doesn't mean that you should completely ignore salary, work/life balance or any other benefit. I read it as, "Don't immediately jump ship just because someone offers you a 3% increase."
>and this is how gamedev is never lacking those new fresh naive developers
I think I know what you mean by this, but just in case, I really think it's the over-representation of SV and startup culture on the Internet. One of the biggest concerns I had before I started working full time as a dev was work/life balance. I listened to the Internet rather than asking peers. It turns out (in my experience) that it's fine in most places. Blogs, Reddit, and HN had me thinking otherwise, and I'm sure the people who drink the SV and startup Kool-Aid are the ones falling prey to this.