Look into the history of the phrase he used - and you will realize that you are wrong.
{ "keys": ["j", "j"], "command": "set_action", "args": {"action": "vi_esc"}, "context": [{"key": "vi_must_change_mode"}, {"key": "vi_is_buffer"}, {"key": "vi_mode_insert"}] },
{ "keys": [";"], "command": "vi_colon_input", "context": [{"key": "setting.command_mode"}, {"key": "vi_enable_cmdline_mode"}] },