I do believe that there will be a change in civilian EMS guideline and scope soon, just like TQ or hemostatic agents we saw in the past decade.
Where is the need? The number of tension pneumo's is low in civilian populations anyway, and I'd be willing to bet it's minuscule in the non-intubated/ventilated civilian population. Seriously I've seen one in 13 years of just about every type of EMS you can think of. They're not even that common in shootings, as you have an open hole in the chest.
I seem to recall tension pneumo's on the battlefield are mainly due to blast injuries...not something we encounter a lot of.