Why is it so hard to export your own messages out of Discord, Slack, etc? We have regressed from the open email standard and gone back to these opaque islands of data that do not adhere to any standard. Slack refused to show me my own messages past a certain age unless I paid up, and eventually deleted them.
A year or so ago I exported all messages from a Slack group I ran and used a Discord bot to recreate the entire dataset including channels and user posts. So we now have our entire history of messages without being blocked by a paywall (Until Discord does the same, and we'll be off to find a new home).