Yes, we consider accessibility a must-have feature. On the web, we have a second DOM tree called the SemanticsNode tree, which is generated in parallel to the RenderObject DOM tree. The SemanticsNode tree translates the flags, actions, labels, and other semantic properties into ARIA attributes. We've been testing Windows Narrator, VoiceOver, TalkBack, and ChromeVox screen readers to navigate a Flutter web app.