The trend among some non-INFPs is to mistype whiny, overly emotional people as INFPs when those people may just as easily be immature, inexperienced, or "unhealthy" (a word I'm beginning to hate because it's not only used in excess in this community but also because its always in correlation with INFPs) persons of another personality type.
Because the MBTI is on the basis of science, the entire theory is a device used to categorize people for practical reasons. However, the trouble with the theory* is that it attempts to categorize people who are both unpredictable and individuals. Thus, no two people in a personality type are alike although there are distinct personality traits within that type.
...It's also much easier to bash or demean a group of people/a personality type through gross generalizations instead of trying to understand how a type's functions operate (nudgenudge).
Unfortunately, what we INFPs consider our strengths (reflecting, seeking purpose, being compassionate, obtaining sensitivity) is what others see as our weaknesses. Well, that's up until they have an identity crisis/become emotionally depressed (emotionally LOST!) and need someone to empathize, appreciate, and listen to them with an open heart and mind Who else to call but an INFP?
*I believe in typology and enjoy learning about it, but no theory is perfect, right?