Shoutout to the crews who just slap carpet over lumpy underlay

I don't get why some installers ignore the feel underfoot when laying carpet. Had a job yesterday where the floor felt like a bumpy road because the old pad was torn up and not replaced. My rule is, if the underlay isn't smooth, the carpet won't be either. I always take time to fix or swap out bad padding, even if it adds to the clock. It makes a huge difference in how the room feels and how long the install lasts. Skipping this step just to save a few minutes seems silly to me. Are we really okay with customers walking on a surface that's not right? What's the point of a quick job if it feels cheap?