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Judging from this topic, you write so well. I think the problem you had wasn't because your writing wasn't good or clear for easy understanding, rather I see that you weren't confident in yourself to write something that will be accepted by the forum members, especially looking at the list of reputable members here and the quality of their posts.
Take this from me; you are good to go. Express yourself the way you want and don't let fear get hold of you.
In many cases some are just lazy, and that's why they end up using AI. Not because they aren't expert in English, they are but they are just bunch of lazyasses. But yes, I second you first statement, some new users may feel inferior with their midcore English after seeing others, high ranked members posting so elegantly. This feelings triggers them to run after perfection and hence the use of AI.
Anyway in my opinion, as long as one is able to express their original creative thoughts, even with broken English, they should be good to go. Not everyone's first language is English. Most of us are aware of that. And there is no shame in that.
Nobody appreciates fake AI shits.