No, these lists just celebrate the outliers - people who extraordinarily successful. It can't be everyone's goal to make it onto one of these lists, because there are billions of people in the world. The vast majority of us are also fumbling through life, and a few are lucky enough to achieve lots of success. They make it onto these lists because they have an unusual and interesting story. I think the word "success" has become overloaded with some insane expectations, especially in media, or in Silicon Valley circles. I don't think it makes sense to label these writers or entrepreneurs as simply "successful". They're the very top of the field, just like an Olympic gold medalist.
This list is about some of the most popular writers who were over the age of 35 when they became famous. But I was talking to a successful writer on Reddit. They weren't super famous, but they made a good living from writing and selling some YA and fiction. They weren't overnight millionaires, but they did end up starting a small publishing company. They made a solid living, and they were able to raise a family and save for retirement. I don't think they made it to the top of any bestseller lists, but I would still call them a very successful writer.
This is also one of the reasons why I like the Indie Hackers community [1], and also the SaaS podcast [2]. I really like reading stories about people who are building SaaS products that eventually make it $100k per year in revenue. I find these stories much more interesting and relevant than reading about huge fundraising rounds, or the history of Uber and Facebook. You have a much greater chance of success with a smaller sustainable company instead of a crazy moonshot. But you won't get featured in TechCrunch, and you won't make it onto any of these 30 under 30 lists.
[1] https://www.indiehackers.com
[2] https://saasclub.io/saas-podcast