Hi Gijs, hi the list,
I am interested in this question because I met a similar problem few weeks ago, when I tried to use Doom Emacs: https://github.com/hlissner/doom-emacs/issues/2708 where ol-gnus are used. Now I'm back with a simple version of emacs (26.3) and it seems to me that there is mention in my setup neither of "org-gnus" nor "ol-gnus" and my org-links work smoothly for gnus articles. Best wishes, -- Jo.