They should’ve made them craftable since the beginning. But hey, it isn’t like Minecraft follows any sort of design or logic, more like the developers say “ooohhh shiny” and add new features on a whim.

And this is likely associated with the happy Ghast mob. I’m not directly opposed to the idea of a flying mob that lets you stand on, to build stuff, but… come on, stop wrecking the theme of older mobs dammit.