That article is only relevant to people who have thoughts of suicidal ideation, and doesn't say anything about "most people". Here's an article which shows a more full picture: https://www.kqed.org/science/1916209/does-gun-ownership-really-make-you-safer-research-says-no

Now whilst your claim is correct, as the KQED article confirms, there's also more to it. When choosing to own a firearm or not to own a firearm, you probably shouldn't just count yourself as "most people" and leave it at that. Instead, it could be better to judge each source of safety or harm and figure out if they're relevant to you.

For example, if you're someone who doesn't stand out at all, but is known to be reckless and has thoughts of suicidal ideation, then you shouldn't be anywhere near a firearm. But, if you; are known to be a level-headed person, have experience safely handling dangerous machinery, understand how to avoid and de-escalate situations, are willing to go through and keep up with firearms training, have never had thoughts of suicidal ideation and are openly part of a minority group that is currently being hunted by a violent cult, then owning a firearm becomes a much more reasonable decision.

Of course, most people will fall somewhere between these two extremes.