Re: Interesting.
Not really. It can help if you have it in a tight space, or you are heavily loading it all the time. My main Pi 4 is in a tight space and I do load it quite often and the PWM seems to fire up about once a week for a moment. Give them a decent PSU and attach an SSD (I use a geekworm x820 board) and they are very happy.
If you need more power, pay more money. Easy.