I'm not sure if I'm reading your question correctly, but the general idea behind running really hot and fast is to get tasks done more quickly and return to a l

I'm not sure if I'm reading your question correctly, but the general idea behind running really hot and fast is to get tasks done more quickly and return to a lower power state. The "big" cores of chips like the M1 are meant to run "bursty" workloads, where as the the "little" cores are better lightweight longer running tasks (and also take up much less die space, which is another major factor).