For my part I’ve seen it actually slowing down time to decide ideas suck. It’s reduced the friction to start implementing so much that people are just diving in before they’ve even had a chance to fully bake the idea. At which point they’re likely to get stuck on Mr Sunk Cost’s Wild Ride.

Management doesn’t see the problem because they are still completely distracted trying to measure dev team productivity in story points or KLOC instead of something meaningful like USD.