A rant on how Disney canon has wasted Vader

I'm specifically speaking on his appearances in Rebels, Rouge One, and Shadow Lord.

He's been reduced to a goddamn slasher villain. Lumbering, slow, but "intimidating". His climactic scene is Rouge One is cool, but he failed to retrieve the Death Star plans because he, in my opinion, fucked around. He failed to capture/kill Ezra and company because he fucked around. He failed to kill Ashoka because he, you guessed it, couldn't because Filloni refuses to part with his alien waifu. And most recently, he's failed to kill anything more than a single old Jedi because he fucked around. Dude doesn't even speak a single word. On top of that, I can't help but feel that adding Vader into the story just cheapens it, not allowing it to stand on it's own without adding in the most popular villain of the franchise. Vader is constantly being hindered by pre-established movie/Disney canon. With other shit he's shown to be able to to in canon, the plans should not have been able to escape his grasp. He should have cut through the dozens of nameless grunts with blaster rifles in seconds, using the force to yank the plans out of the hands of the poor fool who was carrying them. Ashoka Tano should never have survived against Vader, let alone an out of practice Obi-Wan, who went on to hand Vader a second humiliating defeat, only to just walk away before finishing the job again. Maul, as skilled a duelist he is, shouldn't have lasted very long against Vader considering his physical and mental state, but hey, plot armor.

Vader is just added to arura farm, make the fans go crazy for a second, then just fail at his task again and again without so much as a stern talking to by Palpatine. I don't like it.

That's all I had to say, thank you reading.