Really not a problem.. The power cord is only required on certain HDMI ports.. and it likely won't be needed on future/modern HDMI ports.

Why is this even an issue?

"Everyone else does it" has never been a reason, only an excuse.

This isn't even the same as devices that always require AC power but don't show a cord. It's basically a method of providing backwards-compatibility with HDMI ports that don't provide power, but if you're using the state-of-the-art TVs they show the product with, there's no power cord necessary.