Mr. X has never driven before, so when he starts to drive he isn't very good. He starts with a cheap rusty car, learns how to operate it, and then learns what he can and can't do with it. He travels far, watches people drive, asks questions, takes some driver training and over time gets better and better. Over this time he also upgrades the car time and time again until one day he has a shiny high performance ride that is crafted with care and well maintained. People like to ride with Mr. X because he knows what he's doing, and has a nice machine.
Mr.X then turns his focus to trucking, and of course isn't terribly good at it but he's seen people drive trucks before. He asks a few questions and uses his experience to figure some things out, then roars around and quickly searches out his upgrades, going from a cheap rusty truck to an amazing one that is crafted with care and well maintained much more quickly than with his car. People still like to ride with Mr. X, because he still knows what he's doing.
Now Mr. Z has never driven before either, and is not very good at all when he starts. He also begins with a cheap rusty car, but simply fumbles with the controls and lurches around the block in first gear a few times, then is handed a high performance engine. He goes around that same block many more times, and much later has an entire high performance car. However, Mr.Z hasn't taken the time to ask questions or learn how to be a good driver, and often gets into crashes for silly reasons although he's picked up the basics. People don't like to drive with Mr.Z because although he has a nice machine and thinks himself a good driver, he's inept.
This is a metaphor.