Peter , that seems pretty unnecessary imo. Why add on a whole separate service and integration when Plex already and tracks watch status?

Pulling this information from the already cached Plex API would solve this, not adding another entire integration from Trakt.

Because most people don't use Plex, and most people stream from services like Netflix, Disney+, Max, etc., Trakt is better for most people since it is almost everywhere nowadays. Trakt also has more options for scrobbling media.