EDIT: This is not an evaluation of the particular paper in question merely some general evaluation guidelines which are useful.

Drop dead easy way to evaluate the paper without reading it: (Not a standard to live by but it works)

1.) look up the authors if they are professors or experts great if its a nobody or a student ignore and discard or take with a grain of salt

2.) was the paper published and where (if on arxiv BEWARE it takes really no skill to get your work posted there anyone can do it)

Criteria: If paper written by respectable authorities or ones who's opinion can be trusted or where you have enough knowledge to filter for mistakes

If the paper was published in a quality journal or you have enough knowledge to filter

Then if both conditions are met, I find you can do a good job filtering the papers not worth reading.