This negative attitude is detrimental to the goal of producing good technology especially when one asks for the "right way" to accomplish a task.
Does it work?
For a game, nobody really cares if your system is sub-optimal. Nobody cares about the implementation details. Nobody cares that you chose one algorithm over another. All that people care about is it looks good on their screen and plays well in their mind.
If they say "It looks like a game, and it is fun" they don't care which pathfinding algorithm you used, or if your particle systems rely on SOA or AOS layouts. All they care about is that the end result looks good and feels good to them.
If it works for you and your app, then it is just fine.
Computers are really, really, really fast. For the PC you've got about a half-billion cycles per frame. Feel free to use them.
People do and should care about efficiency and correctness even if the component is invisible to the user. It transfers good practices to parts that are visible.
There are numerous examples of systems that "work" but have performance quirks because someone didn't care or thought the part would be invisible.
it is best to use technology correctly and efficiently because it only feels limitless in the moment. A fast but callously developed app on one device will be sluggish on another or even on the same device when other resource-hungry apps are active....
Seriously, please care.