Even as someone who just went through CaRMS and matched to Internal Medicine (my top choice program, I am very happy!), I am not going to lie and say I've never thought about the "prestigious" specialties, and whether it would be "sexier" to tell people that I am going to be a general surgeon, or dermatologist or plastic surgeon. I've also had colleagues who went into FM and they felt similarly at some point in clerkship. But at the end of the day, and this is what I would tell all incoming med students: do what you really, really like... and if that is a competitive specialty, so be it. However, please, do not think about what your specialty sounds like to other people because you have to live through it for the rest of your life, not them.
It is no surprise that barely anyone wants to do FM in pre-clerkship (okay, maybe that is an exaggeration) yet for most medical schools, about 40% of the class chooses to do FM by end of 3rd year. The appeal goes out of the window when you have to wake up at 430 am and put in so many hours, and realize half of your patient list is pressure ulcers and awful-smelling debridements.