What do you mean? "L" and "H" do move the cursor right and left for me just fine. It does not have macro recording/playback or extended commands though so it's not a full fledged vim emulation mode unfortunately.
Yeah, it's pretty annoying for any long-time vim user to not be able to use the macros, which Zed doesn't support. Biggest issue I've had with this editor for sure.
This is my problem with all "vim modes"; the 90% of bindings that they cover works until your fingers' muscle memory wakes back up and tries `gqip` or some other niche vim thing.