Serif (which owns Affinity) was just bought out by Canva, so it’s only a moment of time before they are enshittified unfortunately.

Probably the ones outlined here, which you should be aware of, given there are statements from you included in the article: https://docs.beehaw.org/docs/important-questions-decisions-and-reflections/beehaw-lemmy-and-a-vision-of-the-fediverse/

They are probably using the default installed theme, which doesn’t have scalable icons so everything is horribly pixelated. Not sure why it’s still the default, but as you said it’s pretty easy to change.