Why is it "highly recommended" to set keymaps with "vim.normalModeKeyBindings" via settings.json instead of keybindings.json?

[brandonbeaumia]

The documentation states "It is highly recommended to remap keys using vim commands like "vim.normalModeKeyBindings"": can anyone explain why this is? Is it just to avoid the verbosity of keybindings.json? I am tempted to ignore this advice if that is the only reason, but want to make sure I'm not missing anything in the docs that explains why this matters.