That really only applies if the user has some degree of skill with picking simple locks. Experieced locksport enthusiasts could probably pick it quickly, but for the vast majority of people a key would be easier.
I promise you that for the most commonly used TSA approved locks, this is not true. Many models consist of 2-3 pins and can be open in 1 second by jamming anything that fits into the the channel and wiggling.
Well it matters as a real-life not-too-technical example of why governments' desire to require a similar "master key" concept in cryptography is a really bad idea.
So we can say "remember what happened with the TSA master keys?". And even if they argue that nothing real bad happened because of this breach, we can say "well yes, because the locks weren't very secure to begin with, so it really was a pretty bad idea from the start".
BTW, about the locks not being secure, isn't that the case for almost every lock? Like, don't locks become real expensive very quickly once they start approaching some basic notions of actual security that would keep at least an amateur lockpick at bay? (including securing the stuff around the lock, like zippers, cloth, etc)
https://twitter.com/mattblaze/status/641330920251891712
They're terrible, insecure locks.