The SW development is not just knowing the programming language, you also have to cover many roles, you need to understand and have the domain knowledge of the

The SW development is not just knowing the programming language, you also have to cover many roles, you need to understand and have the domain knowledge of the thing you are developing, you need to have communication skills to coordinate with other developers and stakeholders and many more (like developing intuition to know when to stop manager from making a mistake - e.g. you know this and that idea won't actually work in practice or it will have problems down the line adding to technical debt and so on).