Primers are detonated by impact, not crushing. I've not had to remove tons of live primers but have done perhaps several hundred over the last 45 + years, incluidng a good number of crimped in GT primers. Just ran them through a standard sizer and pushed them out, haven't had one pop yet.
Well, actually, as a young man I DID pop a few back when I first started using a Lee Loader. I pulled down a few hundered GI surplus 30-06 rounds with the first impact puller that came on the market just to remove the corrosive primers. Had a leather glove on my left hand to hold the decapping rod while hitting it with a mallet. But that WAS from impact. And, Lordy, that was a LOONNG time ago! Sure was glad when my first press, a Lyman Spar-T, and a set of Lyman AA dies arrived, along with a Lyman/Ohaus M-5 scale and Redding Master powder measure. Memories.
Anyway, what I's saying is it isn't a disaster even if a primer goes off while pushing it out.