1. Android also has a browser. It is an important platform with many users.
2. Building an editor is so complicated that most organizations want to do it only once. They build a web editor, and wrap it in a native app. The shell like file browser, sharing screens, etc are “native” but the editor surface is a webview. This is how Quip, Dropbox Paper, Google Docs, Notion, etc work. Even iOS worked this way initially for all editable styled text (per https://twitter.com/kocienda/status/1400484473540513792?s=21...)
3. If you are going to bet the core competency of your business on a framework, it’s important to understand the motivations and limitations of said framework.