Why does nobody tell me these things?
I just added a fix to Template:Infobox image so that
|image=The image filename.ext params for nonexistent filenames will show up as redlinks of The image filename.ext, instead of 298px. So now we don't have to document the stupid behavior that we didn't want to be happening anyway. -- FeRDNYC (talk) 08:54, 4 January 2019 (UTC)