....
I will rant the OPPOSITE.
I had one experience feeding live pinks to a corn snake. The snake snarfed three or four down without constricting any of 'em, just straight swallowing. You could hear the pinks squeaking from inside the snake for at least a good 30 seconds, possibly longer. 30 seconds is far too long for the suffering of a feeder to be acceptable.
I've never fed live pinks since.
Many snakes view pinks as not needing constriction, I've seen this behavior particularly in North American colubrids who are known to hunt down mice inside their burrows.