[beezlebroxxxxxx]

In technical writing, which is often trying to be as concise as possible, active voice usually allows the shortest sentences, which, as a practice, tend to be more clear.

However, there are instances when the passive voice is important and should be used. For instance, if you are trying to put an emphasis on the fact that a subject receives an action. This can often be done in a passively voiced sentence where you clarify a certain relationship. In other words, passive voice can be an important part of adding context.

The idea that you should never use passive is largely just people hearing a rule and thinking it is the end all be all. In reality, you're better off learning what both types of structure do, and then choosing one or the other with a specific goal in mind.