Gammadoodler
Hero
Seems like this is kind of key here. We're not really comparing classes so much as comparing classes and their potential to take advantage of external power creep. As such it's less of an issue with the class itself, than it is an issue of the class being functionally barred from the most effective sources of that power creep (at least from a damage perspective).Edit: I should add some caveats for transparency. Monks fare better in a feat-less scenario. They also compare better if we do not allow sources past the PHB (as a lot of builds rely on BB/GFB for scaling melee damage). But if we are using feats and allowing official sources, the Monk falls behind the Wizard, Sorcerer, Bard, Ranger, Rogue, Barbarian, Paladin, Fighter, Artificer, Cleric, Druid and Warlock for damage if that is the focus of the build.
Though, as others have said, there's more to it than damage.