Think about it logically, does it really make sense for you to stop what you're doing, sit down, and begin the intensive dismantling of a weapon or other item (that would also require tools + a workbench IRL) in the middle of an incredibly hostile zone? Regardless of contestation and how much I like sciencing items for parts+XP, it really makes no sense for your character to let his guard down in any part of the core. Hamster it all out and then start the science.
I legitimately didn't know sciencing your items before being killed was a thing until I read this thread. Sore losers everywhere.