Archer has one of the best sliders in baseball and a fastball and change-up that are roughly league average. That's not a "two pitch pitcher," there are only a handful of pitchers in baseball who have multiple plus plus pitches (Kershaw, Scherzer, etc.) His 45.7% career GB rate is above average, and he's only had an elevated Hard contact % for one season (2017) which suggests it had more to do with his unlucky BABIP than some kind of otherwise undetectable deterioration in skills. Over 967 IP in his career, he has a 3.63 ERA versus 3.46 FIP, and most of that difference came in a single season (2017) when he had a BABIP .30 points higher than his career line. I would have more sympathy for the anti-Archer people if he was coming back from a major injury or there was some other reason to think he just stopped being the pitcher he's been his entire career, rather than just having a single unlucky season. (And by the way, he's one of the few guys left in baseball who you can pencil in for giving you 200+ IP. He would have tremendous value even if he wasn't a top of the rotation arm)