I do take it seriously, but they're different. Suicide is purely a mental health issue. Not a gun control issue. If someone kills themself at school by any other means it's just a suicide. If they shot themselves it's on par with a school shooting?
That doesn't make sense, unless your only concern is gun control and you want to find any example you can to reenforce your stance. Those cases go with the crisis of suicide, you can't have those for your mass murder arguement. They're handling that already in a way that isn't applicable to gun control.
Accidental discharges are a safety concern, not a gun control issue. Those were officers and security that accidentally discharged. How do you justify that as a gun control crisis?