What's the point? Anyone who's vaguely interested in it is going to know about it, and there's never going to be anything particularly game changing in a 20th iteration of a franchise. It's still CoD at the end of the day.
In all fairness. I didn’t even notice BO5 was a thing until they released BO6. I own BO3, and read that BO4 was utter garbage. Now I know BO6 exists and that it’s probably garbage as well.
I only have it for drunk couch local multiplayer with friends anyways so upgrading beyond bo3 isn’t even remotely necessary for me. I only bought it because I didn’t have access to my bo2 copy.