I see where you’re coming from but the reality is every defense is a zone based defense. The bills might play more man than they have in the past depending on who the CB2 is next year, but they’re still gonna be a majority zone team.
Also I can’t find the source but I remember seeing that Benford is still VERY good in man, just not quite as elite as he is in zone. I’ll post the source if I can find it.