I can't tell if you're serious or kidding, but #5 is not accurate, at least not entirely. The part about not a lot of people wanting to do it - that's accurate.
So you've just proven my point... who would hire someone who lacks the ability to sense when a post is entirely tongue-in-cheek? No one. Better stick to FP until you burn out in seven years because you only interact with dead people and they haunt your dreams every night to the point of madness. Or switch to Peds.
Here are some more subspecialty fellowship types....
8. Surgical pathology- People go into surgical pathology fellowship because they based their residency choice on whether or not a beach was within walking distance or how much time they would have to take up water polo. Now they realize they are unemployable because they suck at surgical pathology, and hope that by doing this fellowship at a "top institution" future employers will ignore what a failure the rest of their lives have been.
9. Dermpath- People who go into dermpath are the type-A personality a-holes that everyone hates in residency. They probably only went into path because their Step 1 scores and clinical grades weren't good enough to land a ROAD specialty, and now they take out their frustrations on those lesser cretins they are forced to share space with. They pride themselves in having the ability to convince others that looking at skin biopsies is actually interesting, and that they aren't just in it because it's lucrative.
10. Neuropath- People who go into neuro are typically the biggest nerds in medicine. This is in part because they are passionate about a field that basically no one cares at all about. They are not infrequently given atomic wedgies in the women's lavatory. Their work is divided between being the neurosurgeon's b**ch for frozens at any given notice, only to receive a minuscule amount of tissue with which to make a diagnosis, debating extremely rare brain tumors, and looking at 3 week old brains from dead people for no real purpose. They are pretty worthless overall, which is why if they vanished one day no one would notice for at least a week.
11. GI/GU/GYN/Breast/Renal/soft tissue/thoracic/head&neck- people who do these fellowships are masochists who actually enjoy indentured servitude. They plead for residency programs to do additional years of residency and in the end receive absolutely nothing for it, other than the joy of being a scut monkey. People who do these fellowships often do more than one, or even do them indefinitely because the real world is "scary".
12. 2 fellowships- people who do 2 fellowships are sheep. They are controlled by group-think, and tend to enjoy reality television. They are told that "everyone does it" which is sufficient for them to do a four year residency (at least one year of which will be a complete g*ddam waste of time) and then an additional 2 years without questioning it or even applying for a job. They are basically cannon-fodder.
13. 3 fellowships. People who complete 3 fellowships are totally unemployable for one reason or another, who have the mistaken belief that by simply doing another fellowship they will gain the attention of an employer who did not think them qualified for a job after 2 subspecialty fellowships. They tend to blame "the man" for their failings and not the fact that everyone can sense their homicidal tendencies.