Honestly, full AT tree support is minimum table stakes at this point. If a toolkit’s documentation doesn’t say how that support is of course there because they started with it in mind, then it’s an automatic skip for anyone building production systems that are expected to be live in the US, Canada, Israel, Australia, Norway, the EU (in 2025), etc etc.
Dioxus renders HTML. Right now using WebKit, but in the future, its own engine with the same accessibility libraries that power the platform’s accessibility with the layer to get from HTML.