No, that makes sense. I was unaware of this as I usually only see his comics reposted on other platforms. Thank you for adding that context for me.

I still think the way they responded could've been harmful, not to the xkcd guy, but to others going through the comments.

Like, as a disabled person, this can easily read as something that might make me think "the world will never be a good place for me, so maybe I should just do that".

Of course, I wouldn't think that on most days, but you never know who might be reading something at the worst point of their lives.

Did he do or say something besides the lack of alt-text that I'm missing context for? Again, I am not trying to imply that the lack of alt-text isn't an issue, I just am not sure if I am missing something else.
I just find a comment saying "keep doing this so we just kill ourselves" is harmful

I'm not saying their response was okay, but it is also not just "whining annoyingly".

It's understandable for someone to be frustrated over a lack of accessibility. Please remember that this is likely not their first time wanting to enjoy something, but finding themselves unable to participate. What seems like whining is a deep frustration that you are only seeing for the first time.

On the right is Weird Circles on the Map:
Nastapoka Arc, Crater Lake, Stonehenge, The Great Blue Hole, Delaware's Northern Border

The Overlap is:
Lake Manicouagan, Lonar Lake, Clearwater Lakes, Meteor Crater

Image: A venn diagram listing Meteor Impact Craters and Weird Circles on the Map.

On the left is Meteor Impact Craters:
Northern Yucatan Peninsula, Charleviox Region, Sudbury Basin, Chesapeake Bay

(Continued in a reply to this comment. I know it isn't ideal, but I'm not OP)

Accessibility is extremely important. And you deserve to have access to things.

Attempting to guilt people by saying you’re going to kill yourself is not an appropriate response.

Both of these things are true.

In a few minutes I will get my computer and put the text in a comment.