doesn't increase eating disorder incidence for undergrad women "who had not engaged in dietary self-monitoring in the past year and who were at low-risk for an eating disorder" and who were willing to sign up for this
"Conclusions: Among dietary self-monitoring naive undergraduate women with low-risk of an eating disorder, dietary self-monitoring via MyFitnessPal for 1 month did not increase eating disorder risk, impact other aspects of mental health, or alter health behaviors including dietary intake. The null results in our study may be due to the selection of a low-risk sample; future research should explore whether there are populations for whom dietary self-monitoring is contraindicated. "
Science is not easily summarized to sound bites that you can share as an image macro on social media. This is doubly true for something as difficult as nutrition.