I’m sure there are more elegant ways they could have disabled the USB ports, but this might have been partially to avoid users being able to accidentally compromise their device by sticking a thumb drive they found in the parking lot in to see what was on it. For exfiltration and VPN usage over the network there are other controls they can/likely had put in place that you may just not have known about

… do we really wanna keep using a literal Neo-Nazi’s comics for memes, even if we’re changing the text?