No, the blog posts talks about using V8 isolates (V8 is a JavaScript engine). What CF does is support Rust via Web Assembly, and I think Go WASM might be supported. But they're pretty clear that they're not doing a process model, you'll have to submit code that runs inside V8.
The sign-up page[1] mentions several languages that don't (as far as I know) compile to Web Assembly (at least not natively).
Looks like Python there is an existing python <-> wasm interop
Ok, that’s a big nope for me and my use case. I’ll check back in a year or so.
The premise of how this service works so well is due to a feature JS has which Go doesn't, and which Go has no interest in adding, so you will likely be waiting forever.