My employer does offer an Active Shooter optional training course. It also includes a first aid part to it, but its basically how to control someone from bleeding out before paramedics arrive. So it's still coming from a pretty dark place.
I thought my employer did offer a general first aid training separately from this and apparently I was wrong. So yeah, it turns out I'm in the same position as the author of the article...that's depressing.
And also seems dumb, because I understand the fear and low probability/high risk that motivates the active shooter training. But the far more common scenario is something like carrying some old equipment around and it slips out of your hands and a metal edge cuts your arm. Or someone starts choking on a piece of popcorn and you have to help get it out. Both of which have happened at my job and where general first aid training is very helpful.
Edit: It turns out we have specific CPR/AED classes because we also have AED machines. But it costs money and you can't charge company training time for it, so its not really any different than going and getting a certification somewhere else.