This seems like a complete waste since https://vscode.dev etc exist. Why would anyone want to develop inside of a walled garden?
Microsoft's version does not work on mobile. I have tried many times to make it work on Chrome on Android, but it just isn't designed to work on a small screen and is unusable. It's sad.
When I got out of jail all I had was smartphones I would borrow from friends and the only way I could end up developing sanely was to open a terminal to a Linux box and just use nano instead, which meant no IDE with auto-complete, syntax lookups, formatting and most importantly, debugging.
But using linux terminal as devbox doesnt mean you dont have access to modern auto-complete syntax lookups formating etc, there are vim/neovim/emacs with any kind of configurations for all of it, and it can be preconfigured by others with projects like https://github.com/AstroNvim/AstroNvim or https://github.com/syl20bnr/spacemacs
So if you know anyone in the same kind of situation, you can advise them to use that.