That process does a lot more than just take away firearms. That takes away the ability of the person to post on the internet, threaten people, use other dangerous weapons like their car or a knife, and it provides time for an actual determination of dangerousness. Of course the psychiatry community has shown that it is difficult to identify dangerous people, several recent mass murderers passed their psychiatrist's examinations.
If somebody is too dangerous to have a gun aren't they too dangerous to be, for example, flying a commercial jetliner?
The reason politicians want to focus on guns is that provides them a way to disarm the population without raising the concerns that are raised when you force someone into a mental hospital for 3 days. I suspect if you just proposed a 30 day ban on internet usage and video game playing along with the firearms seizures the Democrats would vote the bills down.
If somebody is too dangerous to have a gun, then it is too dangerous not to incarcerate him.
Sick of Republican “mavericks” like Rand Paul and Flimsey Grahamnesty. They can never be trusted.