I would omit adjectives because they are superfluous to technical documentation.
I never thought about how they affected tonality.
Before Grammarly reported tonality I had no idea what tone my writing came across since I write in draconian style treating every textbox as documentation.
Avoid using adjectives is an argument I'd accept somewhat. I hate when it is done in journalism, because this mixes content and comment.
I had a journalism class in college over a decade ago for copywriting and they taught you to avoid adjectives. So this certainly where it started for me.
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