I recognize that everybody is different but is it common for an asexual to enjoy porn, erotic literature, etc?

So, they like to read or watch it, but don't have interest in engaging in it.

Yeah, a lot of asexual folks still like watching porn or reading erotic stories just for the narrative or visual stimulation, even if they never want to act on it. I’ve even browsed an amateur big cock clip on Swapsmut just to see how people frame desire, and it felt more like curiosity than a trigger. So it’s pretty normal.