Earlier quoted context omitted.
(disclaimer: I work on Flutter Web) We actually use plain standard HTML and ARIA attributes for accessibility. If you don't see them, try enabling a screen reader (e.g. TalkBack on Android, VoiceOver on iOS/macOS), then you'll be able to enable accessibility in the app. If you are having problems with a11y, please file a github issue. A11y is very important to us.
How about stuff like being able to select text in the UI? I tried a couple apps in https://gallery.flutter.dev/#/ and none of the text was selectable like in web and desktop interfaces
https://api.flutter.dev/flutter/material/SelectableText-clas...