Unless you leave it unattended there’s zero chance of anything going wrong, assuming you know how to use it. Once it’s up to pressure you have to reduce the heat just to the point where some steam is still coming out, usually in little spurts. After that, as long as the steam keeps coming it can’t explode.
Now if someone comes to the door and you open it and the dog runs out and you lunge after him but the door slams shut behind you and you don’t have your keys, or maybe there’s just something really good on TV, then things might get interesting.
I’m sure you know this stuff puly, just getting it into the thread.