@katrinzaks @jakobrosin Incorrect. As someone who by their own bio 'focuses on accessibility' (it's right there in the name) it behooves you to be inclusive, thus, adding #AltText.
If the image has nothing to do with your post, why is it here?
If it does have something to do with it, even tangentially, then you should add it.
I'm sorry, but if 'Accessibility' is your whole thing, then consider actually being accessible.

I've asked #BeMyEyes to do the work for you in this case but let's start as we mean to go on, perhaps?

Be My AI
A smiling woman with long, light brown hair and glasses, wearing a black top. She is standing indoors in front of a brick wall and a window. She is holding up a small rubber duck in her left hand. The duck is dressed to look like a nerd, with black glasses, a white shirt, a bow tie, and suspenders. The lighting is warm and highlights her face and hair.

@katrinzaks @jakobrosin Though I cannot read them and don't benefit from them, whenever I post youtube videos to my channel that have spoken content, I include subtitles for those people it would benefit.

If your entire shtick is 'accessibility' then by failing to adhere to being accessible, you misrepresent yourself.

PS. Many people will refuse to boost or otherwise promote those that do not include alt text in images on the Fediverse, so you may gain very little traction if you choose not to do so.