It’s a helpful for a student aspiring to enter any profession to have an accurate view of that profession, including economic factors. However, I don’t think reading one person’s extremely biased view is especially helpful to that effect. It would be more helpful to focus on what is common, rather than the experiences of one particular person.
I do think that a good portion of aspiring pre-meds are in the field for the wrong reasons. For example, in my freshman year of college I once asked my next door dorm neighbor why she was interested in medicine. Her answer was something like, “You know when parents ask what you want to be… they want you to say doctor.” She seemed interested in pleasing her parents, rather than being truly passionate about medicine. There are also pre-meds who are primarily interested in the field because of societal views of the position in the United States (different from most other countries) or high income expectations. Such students probably have a higher risk of becoming disillusioned physicians than someone who truly enjoys the field and is truly passionate about helping people.
Regarding debt and financial considerations, yes medical students typically have a high debt load and very late start in achieving higher earnings, but by the time they reach middle age, physician’s median net worth has been historically quite high… near 7 figures. I realize debt load was lower in the past, but not enough to negate the higher middle age net worth. Becoming a physician is certainly not a quick and easy way to become wealthy, but it also does not destine one to a lifetime of struggling with debt and other financial difficulties.