I believe gunpowder was being facetious there about re-uesing, it was a bit of Canadian humor. But with the current value of the loony and limited availability of components in Canada who knows.
You can kill them with Kroil or any oil but you run the risk of contaminating the next load in that brass. Water won’t forever kill them but when wet they are dead.
They aren’t dangerous though until the huge ones like BMG. I have set one off de-caping 30-06 in a rush, it went down the shoot and hit my knee. Startled the poo out of me for sure but the only pain was I jumped so hard I wrenched my back some. I’m a little less gorilla on the press arm now but it is safe to knock out normal primers live, BMG I’d chamber up in the rifle and pop first because they are like ten times the power.