He was only "framed" as a hero because no one knew the truth about him.
As for the other part of your question, if World War I came to a conclusion, why was there a World War II? Or a Korean War? Or a Vietnam War? Or anything else that happened after Event X at Time Y?
Correct. They were never the main focus of the story. Hence why so little time was placed on them and why they got such little screen time, most of which they were simply a force of nature. It's like saying climate change is the main villain of the real world. And even more ridiculously, if it is combated, then "oopsy daisy, no more history to be had in the real world either."The story Beyond the Wall was never focused on the Night King and the White Walkers, who are literally the reason why winter was coming back and forcing the wildlings to march south out of desperation?