No news is as bad as, or as good as it is reported... it could be worse or better. With that said, sure, it's possible that what's being reported is true. But note that the article refers to: "...proposed list, which officials said had yet to be adopted...". So it's still in the proposal stage.
There are many Muslims (Arabs or otherwise) who got processed speedily. I hope they speak up on this sensitive matter. The people being affected by namechecks or security checks seem to come from a wide variety of backgrounds besides Arabs... East Europeans, Russians, Chinese, Latinos, Indians and also belonging to different religions.
Not trying to minimize anyone's concerns, but wanted to point out that at least part of this concern generally results purely from perception. The Govt has its priorities, and immigrants have theirs. There is bound to be some conflict there. The public can accuse the Govt of profiling, but the Govt cannot do the same to any particular segment. (Not trying to defend anyone here!)
Let's hope all these bottlenecks go away and everyone gets processed in a timely fashion. All the best.
OY