This is a problem from a management perspective, not a developer one.
Story points are usable, but they're a "Wild Ass Guess" metric, not a true metric of actual work, and treating them other than a guess is fraught with problems. A 13 point story could fall somewhere between 8 and 21.
Some stories we guessed 8, and ended up being more like 21 (because the dev had to fight unexpected politics, or the API was billed as being "easy to use" but anything but.)
All these are fine and should be fine to developers, except to management.
Story points are usable, but they're a "Wild Ass Guess" metric, not a true metric of actual work, and treating them other than a guess is fraught with problems. A 13 point story could fall somewhere between 8 and 21.
Some stories we guessed 8, and ended up being more like 21 (because the dev had to fight unexpected politics, or the API was billed as being "easy to use" but anything but.)
All these are fine and should be fine to developers, except to management.