If the object is to lyse as many of the cells as possible, homogenising it in a 1% soap solution is probably the best way. I realise this is unlikely to be helpful :-)

Leaving aside the above, I'm puzzled as to the connection to giving birth. It's better to cut the umbilical cord than hit it with a hammer? Caesareans are preferable to just squeezing the mother really tightly?

I know there's the cut/tear issue with episiotomies, but that's not quite the same as a cut/crush debate.