Quoted By:
She's wrong about Rarity's talent. She's good at handling jewels in general, and can find them easily because she's a unicorn and can use magic (she has an affinity for jewel-related effects). She was interested in being a seamstress before she acquired it and doesn't really use jewels to her advantage afterwards since she wants to make dresses and be a fashion designer.
All of them have "realistic" jobs where their special skills are only tangentially relevant, and half of them are deadbeats with no qualifications who do nothing to advance their careers. People forget Pinkie is just a baker/caterer and everything else she does is extracurricular, and Applejack has to actually run a farm and sell product and isn't really helped logistically or financially by her skill at growing apples. Fluttershy refuses to get a real job and just wants to wallow in her animal talent/hobbies (also social anxiety) and Rainbow Dash just has a job she can cheat at with hers in order to avoid working.
They're all self-employed or entry-level workers, and their talent doesn't really affect their employment at all, except that they dream about being able to do more with it. In every case, the things stopping them are all normal real world problems and not in-universe magic bullshit. It's a good representation of degreeless young people from a lower class background.