What is the current state of the lumper/splitter debate?

[Havoccity]

I wouldn't call it arrogance. Whole genome sequencing takes a while and is really expensive, which is why researchers typically just select one or a few DNA regions to sequence.

Its not like DNA regions are chosen at random either. Many are inconvenient to study because they are hard to detect in a DNA sample or are too large, and others are just not worth studying since they barely vary between species.