I've been wondering about the whole time/age issue. However, Hook kind of gets a free pass right? No one in Neverland ever ages. Well in the original story its said that the fairies age and die, but the boys never do. In the most recent Neverland series it was clear none of the humans aged at all. So....if we're in Neverland at all, or if Hook spends time there inbetween Rumple meetings there, him not aging completely makes sense.