Do they have anyone on their team with any game dev experience? I worry because so many game development libraries appear (like the very barebones xcjs, which

Do they have anyone on their team with any game dev experience? I worry because so many game development libraries appear (like the very barebones xcjs, which one of the founders wrote) that are all about pushing static sprites around and handling events, but not useful/hard/boring things like collision detection, animation, localization, serialization and save game management, networking and mirroring, etc.