CRTs might tougher than we gave them credit for. I once dropped a Sony Trinitron from shoulder height when it hit a low ceiling. Didn't crack. Still worked. (And yes, this was at a LAN party.)
When I was a kid we threw out our old B&W tv. I wanted to smash the CRT but had heard that they could explode so from a distance I fired several .22 bullets at the screen. They had no effect. IIRC the screen wasn't damaged at all? I can hardly believe what I'm writing but it was true
CRTs have to maintain a near-vacuum inside IIRC. So it's probably a matter of safety to make them strong; if they're too delicate and get mishandled, they implode and some hapless consumer gets a face full of glass.
Wouldn't imploding rather than exploding prevent the face full of glass? But I suppose it has to be pretty strong to maintain that vacuum even if they assumed no one ever touched, moved, or got near it.