i dunno man
this kind of "13 blunders" are written by ppl who try to look smarter than most ppl and give advices. Common goal is trying to promote some other thing, in this case his own job.

I never skip personal info and that's what got me into my current job.
My employer - " Eldest son? Cool, this is the only reason Im still looking at your resume"

Imagine if I didnt put it in there. And there r other flawed points here but I dont wanna make this an essay