Very true its the slow boiling of the frog that tricks the normies into thinking "the hero has always been like this". A great example is spiderman and how his brand and name is slowly being eroded so its no longer synonymous with peter parker. He's still featured whenever they need to introduce spiderman in new media but you can bet your bottom dollar that characters like miles morales and spider gwen will somehow be tacked on to him since on their own they can't sell shit. Slowly but surely peter will be sidelined to make way for miles and this has been done for so long that people actually think miles is a well written character and not what he actually is, a leech to the spiderman name.