Sorry you're not finding it to your liking and to my knowledge,
"Borrowing" isn't the "norm" on this site, it's the exception to the rule.
I read poems; but, far less than what's posted. Who has that much time?  
From what I gather, the alleged person who "borrowed", was a tad upset.
Upset and sought revenge due to comments she didn't agree with at all.
Her revenge; a rapid and endless stream of posting posts by fellow poets?
I am so not into and highly allergic to mentally draining drama. ARRGH!
I'm on daily when I create poetry and my friends are also to lend support.
Does it matter how many hours adults spend on this site or on the net?
Better question; Is it really anyone's business? Short answer; Who cares!
In regards to criticism in general: They're "personal opinions" and that's it.
If you fall apart, get upset or are seeker of revenge over random's comments,
lock yourself indoors, don't go out in public and don't post on the internet.
What's truly impossible; Finding a way to please everyone at the same time.  
Grow a thick skin, roll with the punches and graciously learn to take criticism.