Hmm. While I'd be more surprised to find out that Wyll's exploits
hadn't been exaggerated to some degree than that they were all perfectly true, I'm not getting the vibe that it's all a sham, and particularly not one that he (or Mizora) is behind. Perhaps naively, I believed him when he told me that he agreed to the pact to get power to make a difference (or at least kill goblins) and didn't get the sense that what he really was after was fame and to be thought of as a hero rather than be one. I guess we'll see

.
I think
our Wyll's exploits are true, for the most part, maybe with some slight exaggerations for dramatic effect (I think he seems to like a bit of theatrics 😉).
But as a thought experiment, if he mostly
pretended to be a hero and then has to live up to these expectations and
become a hero, that would also be fun.
But it could be an interesting backstory idea for a new Tav, maybe with the charlatan background.
I believe Wyll, too, I think hat he genuinely wants to do some good and help people, and that he only agreed to the pact with good intentions, to prevent others from suffering, and also to be able to take revenge. He seems to be a bit impetuos at times, and I think he also enjoys the role as the hero "The Blade of Frontiers", but I think he really wants to make a positive impact.
I don't think that he would correct it if others exaggerate his exploits, but maybe not even out of self-interest, but because he thinks people need a hero.