These are read-line-like bindings which we'd like to minimize in insert mode in general. In particular these two are troublesome if you have a low `editor.idle-timeout` config and are using LSP completions: the behavior of C-n/C-p switches from moving down/up lines to moving down/up the completion menu, so if you hit C-n too quickly expecting to be in the completion menu, you'll end up moving down a line instead. Using C-p moves you back up the line but doesn't re-trigger the completion menu. This kind of timing related change to behavior isn't realistically that big of a deal but it can be annoying.