We should stop pushing the myth, yes, but we should not fall into the opposite extreme. The situation is in reality quite complicated and there are far more choices than "do what you love and be bankrupt" and "do what you hate and make money", and, for once, the complication works out in your favor.
Job seekers: Make a list of your interests and talents. If you don't have a list, either think harder, or start trying some new things, stat. Order them vaguely by how much you like them. Now, go down the list, look out in the world, and ask what kind of living you can expect to make with that skill/talent/interest. Be realistic; for example, some musicians may make millions upon millions, but the median outcome is fairly poor. And be realistic about your level of talent/interest/dedication.
Most people really ought to be able to find something that is both at least sort of interesting and at least sort of economically viable. After all, in the US, even "median" income is a pretty good outcome, especially if you don't hate your job.
I practice what I preach. Technically, in a perfectly-aligned-for-jerf world, computer programmer is my second choice of job. My first-place job would be a music composer, preferably for games. (That's not just because "games are cool", but I actually like the idea of trying to create soundtracks that match up with the desired moods, and especially at the time games had much more interesting soundtracks than movies.) However, a sober and realistic examination of my skills, interests, and talents, matched up with my assessment of a rather high likelihood of total failure as a musician, along with the incredibly small number of slots available even under the best of circumstances, led me to discard that option, no matter how passionate about it I was. Everything in the 15 years since I graduated with my computer science degree has only reinforced my belief that I would have been a miserable economic failure as a composer. (It isn't necessarily "lack of talent", but that my talents led in a not-very-lucrative direction.)