I looked at the title and wondered ooh child or gamer widow.
As someone who gets anxious, the best way for me to calm down is to play a game, although on my phone. As it takes your mind off whatever, it calms you down, it's also enjoyable.
I think it's possible you're frustrated with the situation. My style of parenting is more never smack or shout, as that's me loosing my temper. So I would say throwing the console over the room kind of sets a bad example to DC that when they get angry it's fine to launch something over the room irrespective of price.
If you take it a different way, say DC or DH was angry at you and smashed something you cherish. You'd be pretty upset, angry, so many different emotions.
I don't know if it still works or not, but you've now ruined it for both DC. So the other DC is going to be annoyed at you & their sibling as they've lost out again.
At 16 I wouldn't necessarily expect a child, especially one with SN to self regulate. In an ideal world yes, but gaming is such a big thing, people have become famous and rich off YouTube and Twitch for gaming. So if you were merely just shy and it was something you enjoyed, up to any age there's the potential of them gaming for a while.
A solution would be to put a ban on it, take it away possibly, but to smash it up, not as much.
I think you have to be in a gamers mindset to understand what it means to them.
Another option would be seeking a decent condition PS4 for the twin so they have one each.
I get why your DH is angry, they are expensive, plus be possible recognised DC was using it as a tool to control their emotions and behaviours. Plus he might also believe we should try and set a positive example to DC.
If you'd come to us before launching it to let off steam, we could have advised that for teens w/o SN gaming can be a big thing. With DC having SN it's his way of escaping.
I understand that they've got work to do, you need to find a way around that, maybe you need support in doing that.
But gaming is honestly a HUGE thing so self regulation is hard at any age. I had a BF actually a few, who would game all day, not get house work done. But I understood that for one who was depressed, it was a form of escapism.
I hope this makes sense.
Maybe google gamers on Twitch & YouTube and see how much they game. One became famous recently due to this game Fortnight, he earns a million a month just from people viewing and subscribing, that's without sponsorship revenue. To be fair not every gamer is going to achieve that, but gaming can allow you to have friends with mutual interests, you all buddy up on certain games.
I know of one person who couldn't afford a PS4 when it came out, so the group they were in All put money together to buy them the console and games so they weren't missing out. That's how strong the bond can be.