matthewq337 [1] filed a deletion request for chatterino2-appimage [2]:

upstream is getting rid of appimages
https://github.com/Chatterino/chatterino2/issues/6172#issuecomment-2826464564

[1] https://aur.archlinux.org/account/matthewq337/
[2] https://aur.archlinux.org/pkgbase/chatterino2-appimage/