Former TSA here.
Those bags are absolutely the WORST bags to use as check-in bags. This is because the conveyor lines have doors that swing back and forth to sort bags. When these guys get caught by one of the doors, the door doesn't stop and will crush it, and a lot of times they get stuck causing a complete shut down of that part of the conveyor line.
These types of bags are perfect for loading on the top of your vehicle for a road trip because they're mostly weather resistant. They're also perfect as smaller carry-ons. But due to their bulky and rigid edges, they tend to cause problems for the customer and the TSA agents that have to dislodge your bag from the lines.
Although they can be great because they're durable and they tend to protect your shampoos and soaps from being crushed, you risk having something like this happen. To add to it, they're not inexpensive either.
As far as the cameras go, most airport employees don't have access to footage because they are monitored by surveillance and will only be used for major issues related to injury, death, dismemberment, and imminent safety violations.
I empathize with your frustrations and hope that you get it sorted out but please don't assume that an airline employee was the cause of the issue without reasonable suspicion.
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