Those that think such laws will be used for people like this are sorely mistaken.
This kinda gets to my points when I discuss “red flag” laws. I use it as a generic term that encapsulates taking people’s guns who have not actually physically committed a crime. I also argue it the way I do simply to expand the discussion. I suspect that may be what Rand is doing too.
Frankly, if we just enforced the law, as was done in your link, many of these shootings would be prevented. No law can be 100% enforced, of course, but it wold bring it down from the already incredibly rare occurrence to a “very” incredibly rare occurrence.