Granted this assumes that all putts are hit with perfect speed which for most purposes is one that carries the ball 17” past the hole in the event of a miss. Hit any harder the ball on the “high” line might lip-out. And with less speed the low ball would be more susceptible to the “lumpy donut” of footprints around the cup and tend to miss low.
Again you don’t have to read the break or aim perfectly or even start your putts perfectly on line to make putts. But you do have to be close on both. You have to stroke your putts to roll at a close enough speed to match the break you played.
You need two things to make breaking putts: 1) a stroke that starts the ball on your chosen line and 2) the correct amount of speed so the ball can hold that line all the way to the cup. Good line good speed—nailing one isn’t enough.