[illuminati1911]

The original comment is about engineering competence and having the comprehensive understanding of subject, which is not just limited to running business and getting monthly paycheck to pay the bills.

Some benefits that it will give you:

- It will actually let you move into different positions within tech/it industry when you have wider/deeper understanding of how things works.

- As someone said already in this thread: "allows me to make sharper categorizations whether something is mathematical, architectural, security, programming, framework related or a best practice."

- You'll be better at your job. Maybe not every day you need to know what's happening under the hood, but there are and there will be days when you need to. Even if you only developed JS frontend apps whole your career.

When you actually say "I can build anything I want", then (although I don't know you) I'm pretty sure that you can't. People who get that deeper understanding of things also understand how complex some things are and how complex some things can get.