I never get involved in these things (as a rule), but I feel like some of you lovely people are losing your mind, so I’ll interject with these assuring words:
Klaroline pandering will resume shortly and the entire cast, alongside JP will be singing a very different tune all summer long. I promise you!
The CW PR department is not blind, the CBS HQ employs both market tracking and pr specialists, who are actually good at their jobs. I know some of you are shocked to discover this, but you have to remember that all notes are given only to executive producers and in rare cases publicists and they advise their employee/ client how to adjust their behavior, but the bottom line is no one can order anyone to stop being disrespectful asshat (also the fish always starts smelling from the head, i.e. if the big boss is dismissive towards a group, the rest of the food chain will emulate that behavior immediately as a preservation mechanism - that's basic human psychology). The facts are that the tide of negative comments and mentions outweighs the positives by a significant margin at this point (and normally they are at 65/35 ratio in favor of praise) – this gets noticed ALWAYS, combined with the lack of free (not purchased by the CW) positive reviews and recaps in the major publications and the lukewarm ratings heading into the finale - it's inevitable that a change is on its way.
About this Carina Mackenzie person - it is very unusual for someone with journalism background to lack self-awareness in these matters (or not to have people around who will advise her to at least shut her twitter account for a while). Fandoms have elephant memories that can follow you for quite a while and it's generally not advisable to become notorious for something other than your writing - just ask Aaron Sorkin (or his publicist) how he's enjoyed the last five years of his media exposure and if it had an impact on his sense of self. Also, she is just a staff writer with no credits to her name - it's like fighting with the barista at Starbucks for the right to order pumpkin soy ice coffee after Christmas – it’s pointless, because they don’t get to decide ANYTHING. Hit the ignore button and thank your deity that you are not a petty, insecure person, susceptible to the downfalls of the smallest amount of power in TV writing imaginable. Trust me if she’s not regretting her comments already, its coming. This business is cruel and thankless (even for those that enjoy multitudes of loyal fans).
So keep calm and read some fanfiction, enjoy the inventive work of some kick ass designers on your dash or watch some Klaroline videos (I have to recommend the amazing "Caroline coming to the Originals" trailer – it was floating on my dash yesterday – just outstanding!)