Are upvotes and downvotes federated?

This depends on how big the bath is and how long you stay under the shower!

I do agree. Unfortunately some platforms like PlayStation for example won’t allow Open Source apps so there is no chance in there being an app for these platforms.

However, more platforms are slowly being added with the Tizen app for Samsung TVs in progress and usable through side loading.

In case you didn’t know, Roku and LG TVs have a Jellyfin app.