So mosh is going to guess the auto-complete suggestions or code-docs your editor will offer while you are effectively offline?
Don’t be daft. Mosh can in a limited way eliminate latency, but it can’t provide the intelligence offered by code running on the server if the server can’t be reached.
For this you either need full connectivity or running the full stack locally. And right now only Android (and possibly Windows?) seem to offer the latter option.
The author made it seem that mosh would make that a non-issue.