As pointed out by the Daily Dot, given that Castiel was sucked into a hell dimension right after declaring his love, the original choice also led some to accuse the show of following the "bury your gays" trope (whereby gay characters are considered dispensable though in this case, Castiel survived until nearly the ...
Metatron. Metatron is an antagonist on Supernatural and fans despise him a lot for the way he uses others to achieve his goals. One of Metatron's detractors is carryonmywaywardson, who points out, "Metatron really is the worst among all, he's a coward, hiding and using good people."