Sure, that’s extremely fair! Those qt dependencies are no joke! How do you feel about Evince (apparently now called gnome document viewer)? It seems to be the standard gtk pdf viewer, but I’ve never used it, so I actually don’t know what it’s features are like. It’s a heavier application than mupdf (of course), but at least you don’t need to install qt to use it!
Well, having never played stardew valley, it’s actually hard for me to interpret the comic in any other way. I hope the encounter in stardew valley is different enough not to count as SA, but as it’s represented in the comic it certainly looks like SA.