Saying A Plague Tale is about rats is like saying Last of Us is about fungus zombies, they are a threat but there is more to the game than running from rodents.
This said Plague Tale is a perfect example of the kind of game I don't enjoy. Narrative heavy, weak protagonist, realistic graphics which are pretty but doesn't appeal to me, etc. There are dozens of AAA games like that and I never enjoy playing those to a point I learned to just avoid them. I'm not saying those are bad games but surely they are not the game for me. I'd rather just watch the movie version.
It's on sale on steam by the way, for those interested.