I agree with the view of the author. In my opinion, he said extremely right and analyzed quite deeply.
There are many people who like to show off in real life. Their aim is looking down upon others. Then they toot their own horn, strut their stuff and seek attention or name-drop. We could not accept such kind of thing. I think their action is disgraceful and serious. They show off in order to satisfy with themselves and increase their self-confidence, while their action may hurt other people. But I think it is forgivable and may be even acceptable.
Indeed, there are many people’s showoff is offensive. Under this situation, their showoff is not acceptable and never nice. If we want to show off, we must understand showoff penetrative. Then we can control the extent of showoff. If our showoff is perfect, we will get confidence and receive other people’s favor. Then we will make more friends and get partners. This is good for our life and work.