The menu on this site is essentially what a website's index page used to be, back in the early days of the WWW. It was, generally, a listing of a website's contents, modeled after the default directory listing that a web server produces.
So this menu felt very normal to me, but it may be off-putting to newer users of the web who are used to contemporary conventions such as slide-out hamburgers (not to be confused with slider hamburgers :-) ).
So this menu felt very normal to me, but it may be off-putting to newer users of the web who are used to contemporary conventions such as slide-out hamburgers (not to be confused with slider hamburgers :-) ).