I never intentionally slug a rack on anyone. So I expect the same from opponents. Occasionally it’s even taken me a few minutes to rack the balls. Rather look like an idiot than give someone a bad rack.
Players know what a good rack means and should try to provide one. With a full rack it shouldn't take more than 30 seconds to get it done. It's the casual players that are a problem. Half don't even know how to rack let alone that a tight rack is necessary. Aside from just leaving a loose triangular mass of balls, the biggest problem I get is the "experts" who place their knuckles along the back row and push the compressed mass up to the spot. As soon as they release the triangle, it springs back into shape and loosens the balls. No use in pointing this out. They "made sure it was tight".
I like seeing the rack looking like a solid when I move and lift the triangle. Towards that end I let the head ball settle first then move everything up to it.