It's a different priority, not a down grade. Most people in Loom discussions really don't understand why cooperative async is set up the way it does and why explicit yielding is important if you need to manage a single UI or GPU bound thread. Most of the replies you get are just thinking about raw bandwidth of nameless threads.

But the structured concurrency stuff they added is sorta kinda familiar to explicit yields (as long as you set up everything properly). IMO its uglier than async/await but I also deal with main threads a lot.

I'm excited to see if this breeds any interesting UI frameworks or if its mostly just about server bandwidth.