That's not my argument though. Gambling is not the equivalent of a gun in this situation. Gambling is the catalyst, sure, but the crime is making death threats. Removing all the reasons why people might make death threats in order to stop the death threats is going to be tricky.
If you want an analogy it's like the argument is 'Let's not have banks because they only encourage bank robbers!', and I'm here arguing that really we just need to make bank robbery a crime.
ATMs have long had devices that stain cash if you try to steal from them. Bank cashiers used to have "we don't have the keys to the vault" signs. Vaults that open at fixed times beyond the control of the cashiers are a thing.
Regulation and enforcement are important but removing opportunity and motive are also important.
In a very strict sense, you are right. But people influence other people, and people who wouldn't act this aggressively otherwise find themselves inspired to after taking a bet.