Note: this question has no spoilers but possible answers surely would have spoilers, so please mask the answers to prevent spoiling.
In Season 5 Episode 22 of Marvel's Agents of SHIELD, I understood everything about the episode, but I have one doubt: I see Deke in part of the episode, but at some point I don't see him anymore, and they don't talk about him anymore. Did I miss something? Why is he not appearing anymore, how is he and what is he doing? (If he is alive)
EDIT: I double checked after the suggestion by @Paulie_D and it seems he just decided to leave the group, but still since he comes from the future, and since other characters made the hypothesis that he may disappear, then is he supposed to disappear after all the events happened in the episode?