Yes. The capacitors can carry a high charge for a long time. Much longer than you'd think. Also there is a pressurized glass tube with very strong magnets which could lead to sever pinching or breaking the pressure tube.

It's definitely not something people should do without knowing what they're doing.

CRT taser sounds like a very poor idea

Fun fact: Anything with a big capacitor/s can be use to make a DIY taser, sometimes it's as easy as removing the case to expose the circuit board and pressing that against your enemies.

Brings me back to when everyone in my highschool got really into DIY tasers. Some of us still carry the burn scars.

Me and my friends figured out you could buy big CRT televisions for about $12 from thrifts once flat screens were a majority. We used to smash them with baseball bats in the woods. Did this over and over because it was cheap thrill. Never realized how dangerous this potentially could have been.