The post is called technical writing for developers and then the post starts off with the very topic that intimidates and discourages a lot of developers / engineers: grammar. Putting it at the top implies it is the most important idea (see the journalism principle of the inverted pyramid for rationale). That is the red flag. My usage of that term is the same as yours. My point is precisely to not let worries about incorrect grammar stop developers from trying to create documentation. Focusing on grammar is textbook "missing the forest for the trees". There are so many more important / more fundamental ideas in technical writing than grammar. Of course you will eventually need to learn grammar to become an expert technical writer.