I really agree with this advice, with the added thought that very very specific struggles are usually easier to write about and more compelling to read. For example, this post that my co-author wrote was well-received, I think in part because the advice is so specific ("Don't joke about firing people" as opposed to something like "be a more empathetic manager"). https://staysaasy.com/engineering/2020/06/09/Don't-Joke.html

I also find these types of posts more compelling when the struggle or the solution is non-obvious.