I just found this on the book of faces, it’s posted on a Seattle radio station’s page. I will sum up the comments for anyone that doesn’t want to read them:

“Anyone that zipper merges is an asshole who shouldn’t be let in, or an idiot who didn’t see that the lane was going away and shouldn’t be let in.”

There are a couple of comments about it being the right way to merge, most however are far from that. Also, it is the law in Washington that you have to zipper merge, it is almost impossible to do though.