A used Glock for $950? That is a crime. Everything else is ambiguous.
The cop showed good judgement in asking if he had ever committed a crime. However he did not reveal he was under the protective custody of his parents and had been in a mental institution for suicide. He had been under a 'Legal 2000' hold for 72 hr evaluation which may or may not have shown up in records. No mention if he was involuntarily committed after that. Since his parents had control of him, what was he doing out at 4am?
So really, articles like this are just misinformation and fear-mongering. 'could', 'should have', are not words that should appear unless the writers are either sloppy or just trying to score points by misleading the public.