boomer meme
Maybe open locations in Ontario outside of Toronto and Ottawa.
Unfortunately that doesn't seem to have solved the issue.
For additional context, this text appears when clicking and expanding the image, not in my feed. Usually it's unintrusive, but if the image is large the text overlaps. It's always either alt-text describing the image for accessibility, or just the title of the post. It's not the text content of the post itself.
my settings: 
link to example post: https://discuss.tchncs.de/post/46583193
edit: This issue is resolved with the latest update. It adds a toggle below the image, with alt-text default to off.
Below is the original post context:
How can I stop alt-text from showing over images? Is there a setting I'm not noticing?
Example: 
I'll see you in court.
Where meme?
What did I just click?
It's too popular, and having too many communities and users on one instance creates a problem when things like Cloudflare going down happens.