Vanity Fair hates it too. Dang, apparently Letoker is a lame waste.
"Speaking of disappointed (or, at least, glumly surprised): Harley’s boyfriend, who’s been so prominently featured in the marketing for the film, hardly makes an impression at all. All that talk about Jared Leto going super-Method to play the Joker, tormenting his castmates and whatnot, has led only to a lukewarm display of villainy that, it turns out, teeters on the line between small supporting role and outright cameo. After all that, Leto’s Joker is barely in the damn movie, and when he is, he’s entirely underwhelming."
Maybe HT committing to so many Joker figs before the movie was out wasn't the best idea?