There's always been an issue on this wiki with how article thumbnails are displayed. Sometimes, these issues are minor like if the thumbnail is just an old-of-date logo, which may or may not work for some articles. Other times, it maybe a random image on the article displayed without its context. It feels like the system used generally on Fandom wikis doesn't work on this one.
The Fandom staff have explained in a Community Central blogpost how the system automatically chooses images for each page. It's based on a criteria having to do with the image size and how soon it appears on the page, which is fine for most wikis. But, the criteria also excludes SVGs and this doesn't work for Logopedia. This is especially the case on a growing proportion of pages that use SVG renders instead of pixel-based images like PNGs or JPEGs. Some articles (like /Other pages or articles with a single image) don't even have pixel-based images, which means their thumbnails are the generic page icon.
Logopedia is one of a small number of wikis that would benefit from some method of manual thumbnail selection or at least, a loosening of the SVG exclusion. I understand that the system would have to reject certain icons, like those that appear on certain templates (like the 'i' icon) and are likely to appear on a large amount of articles. I think this would be something to put up to discussion among users and wiki moderators.
Let me know what you think.