This was a separate outage unrelated to CrowdStrike a few hours earlier that took down a couple of airlines as well.
A majority of the VMs in the Azure CentralUS datacenter went down due to some sort of backend storage issue.
Edit: I guess I should have read the article they do say CrowdStrike. They seem to be implying that they were one event when the cloud services outage was earlier and unrelated. I had heard about grounded flights during the first outage as well. So they likely are combining the two events here.
We asked our Dell sales guy this question years ago now, when they had been removed one year and quickly added back the next year.
They are there mostly for government builds, and other places with high security requirements. Usually the requirement is that they need to prevent any unauthorized USB devices from being plugged in. With the PS2 m&k ports they can disable the USB ports entirely in the BIOS.