I'm with you on this one. I don't love purely defensive decks, but they're a distinct flavor that should have a place in the game - especially as they've existed for the last year or so. Things like the Risky Skipper warrior combo or even the earlier builds of control priest last expac that focused heavily on the Samuro+Apotheosis combo seem like they should have a recurring place in the game.
I think where the frustration comes in is the control decks with 6 board clears, infinite spot removal, and cheap threat generation. Those decks just have so many ways to ignore your threats that they're just about as uninteractive as super degenerate aggro decks that kill you by turn 5 with burn. That said, those decks rarely truly exist. I've only played since Witchwood but Cubelock and the Rise of Shadows era Control Warriors were about the only decks that ever got that bad IMO.