Yes, it's an very common mistake, there is also decades of history behind fixing it. But the debate here is not j/k vs [n]ew file/[p]rint file, but about the inconsistency of using one logic in navigating lines of text in an editor vs another in navigating lines of text in a file list
> consistent and transferable keybinds
I'm pretty sure next and previous are older than new file and print file both of which have little use in this context. You could also see it as navigating lines of text vs navigating results in a list (ie search in less/vim) if you want to be pedantic. In (Neo)Vim <C-j> in insert mode inserts a new line below the current and <C-k> inserts digraphs. N/P are not necessarily inconsistent.