Blades in the Dark is a horribly shallow system that is terribly balanced in that your character is meant to fail most tasks so that 'Drama' can happen as you bargain with the DM for success at a cost, which then heavily penalizes your character with injuries or stacked odds for future rolls, making the whole thing a slip and slide into guaranteed failure.
It's bad. Like, real bad. I understand the idea of it and it could have worked, but the default success chance is simply too damn low for it to work without heavy DM fudging and that's really really bad for a game with such simple rules. And since the author seems to like Blades, I cannot value her opinion on TTRPGs