LOL. I have to chuckle at these experiences...not at the passengers but at the TSA screeners. All I can do is shrug my shoulders at this one.
TSA locks shouldn't be the problem that they apparently are in these incidents. Could be that in each of these accounts an inexperienced screener was involved. We're in the process of cross-training our checkpoint screeners in baggage, so that's one possibility. Of course, in the grand scheme of things, there are always a certain number of those who are slow on the uptake.
I'm willing to bet that a great majority of travellers have had no problems with the TSA locks.