This is just poor product testing in my opinion. If they just grabbed a bunch of random RJ45’s from the market and plugged them in, they probably would have spotted this. I’m willing to bet this went straight to production.
They would have had to pick an RJ45 with that kind of boot (there are other kinds) in that particular port during testing. Or, perhaps think more and say "hmm I wonder if that button is in a bad place"
The boot in the example is extremely common though, there’s no excuse for someone working at Cisco of all places to not test multiple cables in the test unit.
This went straight from designer to production because someone thought it would be cheaper to skip testing