As someone who spent a long time in technical writing, and wrote a decent-selling book about getting started as a tech writer, here’s my thought:
The problems with software documentation/tutorials/etc. rarely have anything to do with writing skill—because the biggest challenge is not writing, it’s how to analyze and understand the audience and design what ‘documentation’ they need to get the job done. Separate skill(s), unrelated to writing. “Writing”, in fact, is the easy part.
Think of it this way: you can write the most beautiful, elegant, correct JavaScript that’s ever been written: and it can be utterly useless. Beautiful code is good, but that’s not the goal or the focus.