The concept is used by pretty much all games now. It’s just that during the gilded days of Intel everbody and their mother hardcoded around a max of 8 threads. Now that core counts are significantly higher game devs opt for dynamic threading instead of fixed threading, which results in Intels imbalanced Core performance turning into more and more of a detriment. Doom Eternal for example uses up as many threads as you have available and uses them pretty evenly