Man realises live demos are a bad idea - 2019

Pretty much. There are all these sorts of misconceptions about what “armored” or “bullet resistant” etc. mean. It doesn’t mean something’s invincible or immune to damage or physics- and there are levels of protection- I mean- to get the type of armor that’s going to withstand a high caliber centerfire cartridge or repeated hits from an intermediate or even small caliber round you’re talking about many inches thick and doors weighing hundreds of pounds each- or cutting edge defense tech.

The level of protection at stopping incursion was higher than what normal automotive “safety glass” is capable of and more than most people will ever need. But regardless- “armor” of a specific type tends to work against a threat it is designed for. A “bullet resistant vest” doesn’t generally offer much of any stab protection- the threat from a bullet and the physics behind it are different. So a ball bearing, a hammer, etc. etc. isn’t a failure unless you engineered your armor to stop those threats or they have the same physics models as the threat you intended to stop.