Earning an Extra $10,000/year is Easy

There is a lot left off the table here. A lot of "gurus" love to oversimplify messages and sound profound, but also add a little insult as if it's supposed to motivate people to not want to be "that guy." Here's what's missing from the math: $27 is if you earn that every single day. No holidays and weekends. (10,000/365=27.4). If you're only working this hypothetical side hustle for 5 days a week, you'd have to bring in $38.46/day, and that's without taking ANY time off. No vacations. No sick days. Assuming this side hustle income is taxable, you probably need more like $46/day. So if you can get a second job and earn $46/day or more, and not take any vacations or days off, then you can achieve that $10,000 goal. If the job pays less or you take time off, that pay needs to be more.
Also for delivery and travel gigs, and many other jobs, this doesn't account for gas and vehicle maintenance, or childcare for those that need to consider that. While this goal is somewhat attainable, it's not easy or possible for many people. Many people are already working two jobs too and still living paycheck to paycheck, so getting a third to reach this goal isn't practical.
The first part is accurate. I grew up poor and my parents have budgeted the best they could, but you can't just budget your way out over poverty. I worked a second job twice early in my career before I had kids. It was hard, but it worked for us because I didn't have too many other obligations at the time. The extra money was nice to help cover bills and pay off debt, but it would've been nice to have one full-time job that paid well so I could've had my nights and weekends to enjoy life and go on dates with my wife or out with friends.
That last line is just so unnecessary and insulting. "Just work harder, but people don't want to work," right? People should do what they can to improve their lives. Maybe they just don't care to, or maybe they value their personal or family time even more. It's not an ego thing. The rich gurus preaching stuff like this have their own inflated egos on full display.