Go read the gridiron notes if you get a chance, it covers this. Yes, their tendency will be based on next gen stats and will even change through live player updates through the real nfl season in play now and other modes that are live roster based. Franchise mode will update based on how their playing in your seasons.
Not sure if you played the beta but I’ve posted examples earlier in other threads of this actually working through what they call Star Driven AI. Not only do players behave as you would expect, teams do. Ravens will be run heavy finally where a team like the Bills will be more pass heavy. It’s much improved.