> And I greatly respect the small binary/download size

The latest x86_64 Linux build is 136MB. (https://zed.dev/docs/linux#downloading-manually)

As for your list of grievances, they all seem to boil down to the respective LSPs not doing their job? Does Ctrl-Alt-l (lowercase L, not Shift+i) include the language's server in the context menu, and are there any errors reported for it if it does?

Ctrl + alt + l in Zed is not causing any observable effect.