OP is going to get a shock if they visit Deciat in open.
Lesson one you have to learn is how to get somewhere without something trying to blow you up. Check out some of the chat though, "I'm not bothered with scans, I'll blow you up and sift through the wreckage" (or something like that) is something that they come out with occasionally. NPCs do sometimes gank.
Submit and you get to beat the material piñata. Possible g5 manufactured mats are always worth picking up. Each to their own though.Why on earth would you submit? Fighting the interdiction isn't exactly difficult in any ship, against any npc and is far more effective if the station you want to get to is in the same system.
Fight the interdiction, win and enemy Npc's don't constantly reappear. They are effectively gone for the entire time you are there.