Is there a single word to describe someone who disregards the fine
details of something and only focuses on what they believe is the
bigger picture? I'm looking for a pejorative connotation similar to "pedantic" which is the inverse: focusing on small details while ignoring the bigger picture.
A "hedgehog" is someone who knows "one big thing" as opposed to someone with the thinking style of a "fox" who knows many little things. Hedgehogs focus on the big picture because this picture is sufficient to discern their "big idea" which this person thinks is all that really matters. From the link:
The Hedgehog Concept is based on an ancient Greek parable that states,
"The fox knows many things, but the hedgehog knows one big thing."
In the parable, the fox uses many strategies to try to catch the
hedgehog. It sneaks, pounces, races, and plays dead. And yet, every
time, it walks away defeated, its tender nose pricked by spines. The
fox never learns that the hedgehog knows how to do one big thing
perfectly: defend itself.
Philosopher Isaiah Berlin took this parable and applied it to the
modern world in his 1953 essay, "The Hedgehog and the Fox." Berlin
divided people into two groups: foxes and hedgehogs.
See also as an additional source: National Public Radio explaining the same terms.
As I have seen it used, the term hedgehog" is pejorative to roughly the same extent that "pedantic" is, i.e. very mildly (but this could be my fox-esque bias).