Your acidic tack is hardly warranted. Obsidian is less than a year old, and hasn’t officially left beta. Surely your suggestions are valid, but you’re not going to win influence by degrading the devs or other users.
The app is an Electron app, so it’s not clear what you mean here.
From an accessibility standpoint I hope we see this sometime soon.
The mobile app is in development, though the devs are not planning it to be a full experience. See the roadmap: Trello