@8petros Hey, thanks for checking. Yes, their homepage lag a bit (like a sloth) to reflect the information on the README at the root of their project dev: https://codeberg.org/superseriousbusiness/gotosocial#user-content-image-attribution-and-licensing , You'll find the change done 4 month ago in this commit: https://codeberg.org/superseriousbusiness/gotosocial/commit/1603a7fd484bcf47818f388023610898d464a558 (because I asked to clarify the licensing of the mascot before reusing).
I'm sure an update to the homepage will follow soon™.