Identifying drives that starve the rest for IO

I'm using a custom Bash script to deploy f3 for massive drive testing (thousands per month).

One problem I have is some faulty drives will cause the rest to stall. I have finally found a way to identify (and remove) them to restore the peace in the Galaxy - so I thought I'll share my research:

https://unix.stackexchange.com/questions/484900/detecting-misbehaving-usb-flash-memory-devices-that-block-the-rests-io