I am not saying Blades in the Dark is not specific. I am saying it is less specific than D&D. I explained why in the thread. "D&D, with its very specific decisions on combat, magic, and how power levels are measured, and what it lacks"I think you are wrong and missing the point. I would go so far as to say that defining BitD as "generic" makes little sense. The game is designed from the ground up to do a SPECIFIC thing. You can read lots about is from the designers.
Defining BitD as generic makes little sense - but it makes no sense at all to define D&D as generic. Even 5e is designed from the ground up to do one specific thing - be D&D.
I then compared it to Fate - which is absolutely more generic than either. I could bring in GURPS but with about six separate magic systems and at least two and I think three injury systems I could argue that GURPS is more toolkit than game.
And as mentioned good bespoke always beats generic if it hits the target.