@mcc And then you also get nuggets like company CEO going onto google IO keynote and promising the engine will ship Vulkan support in "like 3 months", and that's *totally news* to people working on the engine since everyone there is "it's gonna take 3 years to get into a design that suits vulkan". Why would a CEO do that? Because another engine did it, and it's a pissing match between CEOs or something.
@mcc and then you mix in some pride and hubris and arrogance, like "hey all the cool kids are doing this mantle-like renderer design, who are we to not able to pull this off?", and you start nodding along at the conferences and proudly saying how it's all gonna be cool & cozy.