what the hell, @davetroy ?

Context: I wanted to reply to this post (https://masto.ai/@prachisrivas/110946194213656517), filled the modal's input (because I were on original post's instance) with "toad.social" and then I got redirected to this very weird and very strange page. Mind explain, for what on the Earth does this image of a frog is putted at bottom left???