No, mastering a complex and powerful language means use the minimal feature for the majority of your needs, and knows how and when to use the "dangerous" part f

No, mastering a complex and powerful language means use the minimal feature for the majority of your needs, and knows how and when to use the "dangerous" part for a small fraction of your needs. I do not know much of JS, but people write C++ with loads of patterns are prominent examples of people who do not master the language. That's not trick. That's real engineering with (often) bitter experience.