Yes, some babies are coming too fast to allow the tissues time to stretch and/or are too big. In those cases an episiotamy is helpful.
But months before delivery perineum massages can prep and toughen up the tissues down there, and it's undeniable that some doctors don't want to wait for things to slowly stretch and accommodate the baby and they unnecessarily cut to hurry things along.
Induced labor with oxytocin can result in complications that increase the time of deliveries. Our first daughter was such a case. They broke the waterbag deliberately, thus committing her to the delivery. Then they started the oxytocin. The baby hadn't yet turned properly. With forced contractions it jammed her occiput transverse. After fourteen hours of labor the OB dug out the foreceps or one or both of them could have died. Thank heaven she didn't tear.