Both Kenobi and the ST suffer from the same basic issue. There is no story to tell, and both end in the same place where it started. Ultimately some of us are left wondering what was added to the overall story set out in the first six films. Star Wars has nothing new to say. It’s just regurgitating past stories while throwing in insufferable amounts of fan service.
I respect your opinion, but totally disagree. Sure, the saga can exist without this series, but this series addresses what Kenobi might have had to deal with after ROTS and before he could be the character he was in ANH. It brings the inquisitors into the live action canon (remember, Vader only helped the empire hunt down and destroy the Jedi - the Inquisitors were the ones doing most of the work). As for fan service, it is only insufferable if you don’t appreciate it. Those of us who appreciate it love every moment of it.