I can't choose my audience. Not when I post to the general public. My audience is whoever happens upon my posts.
And so, all I have is what I've learned so far plus deduction from what I've learned plus assumptions based on what I've learned. Plus a little hope for feedback whenever I post an image.
You may not be able to choose who views your posts, but you can and should choose your target audience.Basically, who do you want to reach? Who would resonate with your content? Those are the people you write for and you write in a style most of them will accept.
I am glad that you are working on accessibility and experimenting on how to do it best. But it is hard to help you when you ask for feedback and then reply that our feedback is wrong.
Others in your target audience are probably more suited to give you feedback.
"I have no interest in your topic, and don't even read your posts, but you violated this rule that I arbitrarily made up, and I will force you to change even if your actual followers don't even want it."