That counts for everything, not a little something. Lance Armstrong, despite being American was a world wide phenomenon, his bike racing was complimentary to his conquering cancer story.Most of what you write is a consequence of being from the USA.
Another thing is that he DID beat cancer and recovered to be a 7 time TdF champion. That counts for something.
Bike racing wise Tadej Pogacar looks likely to break most existing records but as of now he is nowhere near what Armstrong accomplished in wealth or public recognition globally. Pogacar is isolated in a cycling bubble, Armstrong was not his biggest impact was outside cycling. If you are just comparing Armstrong and Pogacar using bike racing metrics, Tadej is superior.