The Read: Johnston is no longer just the disappointment version of his rookie-year conversation. He has become a functional vertical size weapon with real touchdown leverage, but the weekly fantasy shape still has teeth. The Chargers can use him to stress coverage vertically, win through size, and punish defensive backs when the ball arrives on time. The risk is that his value still swings harder than a loose gate in a thunderstorm: target competition, injury interruptions, volume fragility, and inconsistent target command keep him in the boom-bust WR3/flex lane rather than the locked alpha lane.