Why the tone policing? This isn’t helpful. Whereas parent comment was to the point and linked to a helpful resource. Give people the benefit of the doubt and assume good intent.

I did assume good intentions and even gave them the benefit of the doubt: that's why I asked them why they were using a commanding tone and said nothing else. They clarified that indeed, their intentions were good and so being rude and sounding commanding wasn't the intent, and that was the end of that. Why do you have to turn this into something bigger? It was a done topic.

I also disagree that this isn't helpful. *

For one, they're now aware that they come off as commanding when they write like this. They now know they should look up why that is (if they care), and how to alter their language accordingly. This should serve them well, since it makes their use of language more in line with their intentions, and prevents them from receiving rude / more involved meta responses from those who don't assume good intentions or aren't willing to hear them out like I did. It should also prevent them accidentally causing reputational harm to the projects and organizations they're trying to support this way.

Second, since I kept it brief and minimal, I avoided other people asking about this not so nicely and not so straightforward. Could have turned into an ugly flamewar.

Speaking of, I do not understand why some people have it so out for "tone policing". It feels like an overreaction, a grand backwards swing in response to supposed "moderation overreach / censorship". Admittedly very in vogue these days, but cultural standards exist for a reason. I refuse to be forced to decide between the two extremes of overpolicing and no policement at all. I do also appreciate the value of just letting moderation tools and moderators do their job, but I do still have some - increasingly faint - hope that with some people, communication is also a viable, or even the preferable way - as it was in this case.

* And I further disagree that being helpful in terms of information content or effect would be mutually exclusive with all this, or would even be related. Helping alone doesn't make a helpful person, particularly if helping isn't their explicit intention.