Since season 12 there is a shift in tone of the show. It tries to really show action but it fails, action is not this show's strong suit at all, the supernatural is and so is the plotting. It also tries really hard to show how badass the boys are and somehow even fails with that. This show was cool, beyond cool and smart. Seems now that there isn't much happening, most of the time is spent talking and when something does happen i ask myself why am i watching this and what is the point. Did i care about this long, unimpressive, boring monologue from the demon, no, do i care about these new hunters, no, do i care about Mary, absolutely no, do i care about alt Bobby, no, do i care about the main cast, sure, but do i care enough to see them just talk and not do anything, no.
And really the blade doesn't kill the vessel? In Lotus the president doesn't remember anything why would he? Oh right because consistency means nothing now. What's with angel's grace? All over the place with their mythology. It just means nothing now.