1. This is what the "Ban" feature is for.
2. Anecdotal. Not really an issue in my experience.
3. This is what the Discord API is for. There's a really simple API to dump the chat history. Just make a cron job to dump every 10 min or so, and host that on a static site. Problem solved.
4. See 3.
I don’t see why anyone complains about Discord user experience when you can just manually implement basic functionality that the Discord devs didn’t see fit to put in.
Why would anybody post on a forum when you could just write a custom client for Discord from scratch?
I’m not sure why you’d feel the need to come back and do a victory lap. You’ve thoroughly debunked the idea that the Discord search UX is less than stellar by pointing out that you personally built and maintain your own search UX based off of API that is both universally understood and governed by a TOS that none could possibly misinterpret.
3. I think he writes as a user. Do you expect the user to export every discord chat history.
4. See 3.