The side of the argument that fans tend to fall usually depends on their preference between the director’s cut and the theatrical cut of Blade Runner.
Deckard is a Blade Runner, meaning his job is to hunt down and retire (kill) replicants – bio-engineered androids.
Blade Runner is based on Dick’s novel Do Androids Dream of Electric Sheep?
At the very least, there probably won’t be a similar debate in the future, since according to Villeneuve, Blade Runner 2049‘s theatrical cut is the director’s cut.