Yep. Nightfalls all have different amount of enemies and champs and take different amounts of time. Making a singular requirement like this that applies to them all despite those differences makes no sense. It actually shows a lack of common sense or lack of internal communication. No idea why they STILL repeatedly do things like this. When the most efficient way to do it is not indicative of the intended combat or intended way to play(res farming, needlessly chaining supers instead of simply using them when actually needed, excessive finisher amount of finishers instead of safely killing powerful enemies from a distance, etc), then it is poor implementation.