https://news.toyark.com/2021/06/04/mcfarlane-toys-batman-1966-retro-6-inch-figures-revealed-430563 The articulation in the legs is like that so that the figures can sit in the Batmobile.  If McFarlane gets to releasing a 1/12 scale 1989 Batman later then maybe there’s a chance that there will be a 1/12 scale Batmobile release as well.  I’d buy one for sure.