Weird, I have never noticed a single one of the issues you mention. There really isn't much I don't like about discord, though I wished threads worked more like Slack.
You cannot search in discord threads. Until recently, there wasn't even a way to go to the first message in a discord thread without scrolling up manually.
I like that they are unobtrusive and low cost. Easy to spin off a small discussion without bothering others.
In discord, a thread becomes a big visible thing in the sidebar. More than a couple and you're annoying everyone on the whole server. Completely the opposite of what I want.
