@ChromiumOS-Guy please keep the discussion on feedback and suggestions, avoiding giving orders or similar statements.
The way you put it is a bit rude for my taste. It does not sound intentional, but with a bit of out of context to me. Its not that the app is being developed without a data model in mind, more like new requirements (replies, edits, new message types, etc.) requires rethink on how things are done, which is pretty common on any medium o higher complexity project.