The slow and extremely tragic death of Marvel TV might've just reached its Thanos Snap moment, as Jeph Loeb is reportedly on his way out the door in the middle of Kevin Fiege's ascent toward the top. Signs of the small-screen Marvel venture's downfall have been in the tea leaves for a while now, starting with Netflix's Defenders Universe—Daredevil, Jessica Jones, Luke Cage, and Iron Fist—being canceled one by one. Then plans for a live-action Ghost Rider series on Hulu got the ax, reports hinted that Marvel TV would shift its focus …