If it wasn’t obvious by now, I thoroughly dislike Star Wars Rebels because it presents the franchise at its most sanitized, play-it-safe version where everything is smooth sailing fo the good guys.
spoilers:
It’s as smooth sailing as it is for the heroes of the OT, which is the vibe the creative team were aiming for. They have the defeat of the Battle of Hoth. The Rebels have the defeats of Atollon and the attack on the Lothal factory, where they suffer equally heavy losses. The OT has Han getting frozen in carbonite. Rebels has major plot arcs where Kanan and Hera are captured and tortured, with many other characters meeting the same fate in standalone episodes. Personally I’ve always found the idea that Rebels never had the good guys struggle to win to be a pretty ridiculous notion.
Also, you may not like the show but I think you should still hide finale spoilers since this discussion was started by someone who hasn’t watched Rebels.