Greed. That reason is greed.
“A Personalized Profile analyzes your unique head and ear shape for precision sound,” reads the option on the Call of Duty store.
Sounds customized for your specific ear shape??? I’ve never been less willing to believe something in my life
It is a real thing. Very few people have identical ears on both sides of their head, and almost no one shares the same shape with another person. There’s a few active implementations of this on truly wireless earbuds, but the latency makes it irrelevant for most things except music. Depending on just how unique the ear shape is, it can drastically change how things sound.
In no capacity should it be a paid feature in a game, though. In a more competitive game with a lot of value placed on audio like Escape From Tarkov, this would completely change the game and how it is played.
TLDR: Your ears are unique, and your brain spends your entire life from the moment your ears are hearing things, tuning to them.
“For some reason.” Money. The reason is money.
Imagine paying for the privilege of hearing unemployed dudes and 12 year olds call you racial slurs in higher quality.
Can I get higher quality slurs? I want my racism to be more sophisticated than the common man; like Measurehead in Disco Elysium.
Fun (probably) fact. Warzone players complained almost constantly about the lack of audio quality. It was an issue that only got worse with each “season”. So now that this happens, I can see why.
“Hey players, you complained and we listened! Now pay the fuck up!”