It matters because it's a very strong signal of quality.
The generated posts don't meet this bare minimum. For example, some posts have activities for toddlers involving string or rope, but do not mention the non-obvious strangulation risks. This website should not have been published in this state.
It's like reading other people's chat gpt conversations, not very interesting or useful.
The MySpace era internet where anyone can create a page is back and I'm here for it
With that said, I really like this site and the approach!
The point of accessibility isn't an equivalent experience, which is trivially impossible in any case. The point is to make the material as useful, wherein possible. Especially when everything in the UI costs its user the time of its verbal description, "as useful" very often means ensuring the irrelevant is left out.