Describing a person who values the unimportant while ignoring the important [duplicate]

Solution 1:

Penny-Wise, Pound-Foolish

Meaning that you spend a lot of time looking after the small parts, but you're terrible with the larger, more important big picture.

Solution 2:

He can't see the forest for the trees.

Solution 3:

Shallow: having little depth; lacking intellectual or mental depth or subtlety; superficial. (First recorded c.1586 of thought or feeling.)

Because of his shallow reporting, the reader of this story is being misinformed by omission. - kktv.com

Superficial: displaying a lack of thoroughness or care: of little substance or significance. (First recorded c.1530 meaning "not deep or thorough" (of perceptions, thoughts, etc.)

I have often thought that if photography were difficult in the true sense of the term — meaning that the creation of a simple photograph would entail as much time and effort as the production of a good watercolor or etching — there would be a vast improvement in total output. The sheer ease with which we can produce a superficial image often leads to creative disaster. -Ansel Adams

Frivolous: of little or no weight, worth, or importance; not worthy of serious notice. (This is a less serious way to address the issue, though. Sometimes implies levity.)

Rob Ford has gained international media attention and has been fodder for late night comedians. Frivolous reporting fails to examine the deeper issues at play in all this which – while not generating the headlines of lewd statements and admitted crack-use – seriously warrant attention. (a synthesis)

Solution 4:

I would say that person is definitely sweating the small stuff.