Games are already horifically inefficient
That’s so far from the truth, it hurts me to read it. Games are one of the most optimised programs you can run on your computer. Just think about it, it’s a application rendering an entire imaginary world every dozen milliseconds. Compare it to anything else you run, like say slack or teams, which makes your CPU sweat just to notify you about a new message.
The text is probably made up, but people have done such swap posts several times before and got similarly opposite results. Usually the posts get removed from the sub when someone eventually notices the deception, but you can still read them if you have a link. It’s a very toxic sub.