Because CCP doesn’t think things through. Back in the days when wormholes were introduced, this would not matter because you still had clone insurance. But when CCP removed clone insurance. no one paid attention to wormholes.
Whether it’s not a “valid” argument is debatable but if you do not want to show up in local, there have to be significant downsides for this incredibly powerful capability. Not just some delay or scanner malfunction. The risk for your reward should be appropriate and risk of losing SP is the only appropriate risk for the incredibly high reward of this capability. Especially if you can just bridge in dozens and dozens of bombers or other ships that just appear in system on a deep-safe (which are easy enough to create) and would never appear on anyone’s dscan so that you would at least have a chance to know what’s going on around you.
Besides:
