User blog comment:JohnathanNash/Editing and some things to look for./@comment-26030957-20170201233838/@comment-5101683-20170202004848

That's using perfect tenses, not passive voice.

Passive voice would be "Editing was explained by Johnathan," or "Matthew's hair was torn out by Matthew." or "Ideas were come up with by Matthew." (dubious)

I think that it is good to avoid that kind of sentence structure (especially because it's impossible to create compound sentences), though passive voice is useful when not mentioning the subject. Examples: "Editing was explained." or "Matthew's hair had been torn out."