Yep! They work great in many situations. However, Cloud9 is quite a bit more usable and stable on something like shaky/inconsistent airplane wifi. It’s also way less friction to setup and tear down 3 or 4 Cloud9 instances in a day compared to workspaces.
I treat Cloud9 like any other ephemeral editor process. Need a new editor window? Cloud9 project. Done for the day? Commit everything I care about. Tear it down.
That said, I frequently spin up Windows workspaces to test software or workflows if I’m writing a guide or content.
(Compared to Cloud9, I greatly prefer Workspaces, but still use Cloud9 on occasion for a few niche use cases)