I'm not sure but I think this kind of question is more appropriate on Reader forums.
Anyway, I noticed that the amount of dual wielding characters in the novels I read isn't really much. And if there are, most of them don't usually used full length swords (dual knives, mace, shields, axes, asymmetrical pairs, etc.).
I guess people generally don't immediately think of dual-wielding as the go-to sign of making their characters cool.
I think it's more common in anime, movies, and video games since it actually looks cooler ngl.
So yeah, it's not that tropey to me.
Actually, I think there was only one novel I read that actively used the dual sword trope for their MC, it was a katana IIRC, and I laughed for a solid minute cause they had him hold it in a reverse grip cause he was surrounded by enemies.
I think it was more of a confused laughter I guess.