Curate, connect, and discover
I think Danny wasn’t that freaked out by his death because he grew up with his parents talking about ghost and the death and the other side, and i think that just desensitized him to death and it’s concepts. And even if he didn’t believed his parents before the portal, i think he did had a background noise of kinda, expecting to come back after death, even if it was as a mindless ectoplasm being, and that probably made him think to much about death, so much, he just, didn’t care if he, himself died, because he kinda knew what would happen.
Meanwhile, Jason was, in fact, pretty used to death and dying, but he was never desensitized to Danny’s level, Jason knew you died, he knew people killed others or themselves, how death was a part of life, but he was still scared. He died young, he knew he could die on the job, but he never thought much, maybe he wouldn’t have freaked out that much if he had been older, but he wasn’t, he was a kid.
Let’s stay clear, this is my opinions, they are formed with what i know about both fandoms, and their shared community, if you want to add something or inform me if something i have said isn’t in character or in canon, do so please, i love learning :D
Danny: ...and then I died, which, for some reason never freaked me out
Jason, who sometimes stays up all night freaking out about his death: yeh my death never freaked me out either