I've never seen one of your rejection notes, but I can tell you all the other editors give absolutely no reason why they reject my articles. Since most editors don't make any money on their publications, I wouldn't expect them to spend any time explaining.
However, I wrote a how-to piece with thorough citations and my own experience as a professional with over 20 years in my business and then ran it through Grammarly where it scored in the mid 90s, has no typos, simple grammatical errors, no filler (actually, literally, really, etc), and only a few instances of passive language and it was still rejected with no reason given and ignored by our genius curation staff.
I would love for you to explain why that article was rejected.