Not so sure - would mess with the looks. (My overclocking/cooling/silent PC days date back to SilentPCreview about 2001!! Have now happily retired my RPi3 for a VIM2 as my daily driver.)
Ran 8 copies of your script here fine. All 8 CPUs maxed out at 1500/1000 OK. Took about 6 minutes to get to 80 centigrade at which stage CPU frequency throttling kicked in fine. Ambient temp here 20 Centigrade, I have my VIM2 on its edge to aid airflow and no heatsink
$ uname -a
Linux dukla 4.9.26 #49 SMP PREEMPT Fri Aug 18 11:15:04 CST 2017 aarch64 aarch64 aarch64 GNU/Linux
ps - hope you post a link of your review here.