I've never seen something as complex as a video game vibe coded that was actually well optimized. Especially when the person doing the prompting is not a software developer.
So I personally do care and I am someone, so the answer is not no one.
Vibe coding as we know it has only been a thing for the last 12-18 months. So by definition the vibe-coded games you have seen are the ones being rushed.
Your second paragraph does not follow, at all, from the first. These are completely orthogonal demands.
The gaming industry is absolutely overwhelmed with outrageously inefficient, garbage, crash-prone code. It has become the norm, and it has absolutely nothing to do with AI.
Like https://nee.lv/2021/02/28/How-I-cut-GTA-Online-loading-times.... That something so outrageously trash made it to a hundreds-of-million dollar game, cursing millions to 10+ minute waits, should shame everyone involved. It's actually completely normal in that industry. Trash code, thoughtless and lazily implemented, is the norm.
Most game studios would likely hugely improve their game, har har, if they leveraged AI a lot more.
People definitely do care. Nobody wants vibe-coded buggy slop code for their game.
They want well designed and optimized code that runs the game smoothly on reasonable hardware and without a bunch of bugs.