sigh
The point
wasn't that any suffering is invalid whenever there exists worse suffering somewhere else. It's just that a condition which confers vastly more advantage than disadvantage is generally not something people want to hear you bitch about.
Your flu example doesn't fit here. Having the flu doesn't confer any sort of advantage, just suffering, so telling someone suffering from the flu to stop complaining because some people have cancer is both A) silly, and B) not what I was talking about. (What was that about straw men...?)
On the other hand, being rich
does confer a vast amount of advantage which grossly outstrips its disadvantages, so nobody wants to hear you bitch about how much it sucks to be rich.
Being beautiful
does confer a vast amount of advantage which grossly outstrips its disadvantages, so nobody wants to hear you bitch about how much it sucks to beautiful.
I'm not just using "Well it could be worse!" as a way to invalidate all forms of suffering that could potentially be worse, and if that's what you got from my post then you weren't paying much attention.
I was pointing out that whining about something that does you far more good than bad is obnoxious and irritating. Think about a little kid whining, "Man, my parents are so crappy for making me come home by 11!" Yeah, well, they also spend thousands of dollars a year on supporting your well-being, kid, so shut it.
If you want to whine about having the flu, be my guest--the flu doesn't do you any good, so the whining about the proportionally small negative aspects of something that provides much greater positive advantages doesn't come into play.
Would you trade having the flu for not having the flu? Sure. Would pretty girls trade being pretty for being ugly? Fat chance. This is why I don't want to hear them complain about being pretty.
As for ENFPs and attracting people, I think Lauren Ashley's post sums up this position well:
Bolded part = the crux. Hearing ENFPs complain about getting too much attention and having too many people wanting to connect with them is annoying
because the ability to connect deeply with people provides much bigger benefits than negative side effects, not just because I can imagine a scenario in which their suffering could somehow potentially be worse.
Great job on your own

though.