What part of Odysee is not libre?

I see that the Odysee app on F-Droid says “Odysee website itself is not libre.” but I can’t find out which part is not libre. Note: New users can only put 2 links in a post. Annoying. Front end: GitHub - OdyseeTeam/odysee-frontend: The code that runs odysee.com · GitHub (MIT) Web Server: odysee-frontend/web at master · OdyseeTeam/odysee-frontend · GitHub (MIT) API: githubcom/OdyseeTeam/odysee-api (MIT) Media Server: githubcom/OdyseeTeam/player-server (MIT, they forgot to add the license file but the README states “This project is MIT licensed.”) Docs: githubcom/OdyseeTeam/odysee-docs (MIT) Media Conversion: githubcom/OdyseeTeam/odysee-media-usagi (MIT) Transcoder: githubcom/OdyseeTeam/transcoder (MIT) Thanks.