No one is saying that setting up NewPipe on Bluestacks is particularly difficult.
Everyone is just trying to tell you that it's a needlessly convoluted way of watching YouTube videos on desktop, and that there exists many better options to achieve the same end result. Do what works for you, I definitely have some weird workflows and hacky work-arounds too, but expect people to push back if you try to recommend it to others because it's a pretty bad recommendation.