Still Here?

Having such protective treasures would allow them to not be so wary of members of the younger generation and would also stop those with more powerful Presences to so easily beat those who hadn't fostered it properly yet.

It wasn't that Devil Path cultivators didn't have Presence, because they did. The problem was that they didn't have a targeted training method for it like the Epistemic Tower trials. In addition, they were very young. There was a reason why Conventional Path young geniuses were much older than them, it was because it took time to cultivate things like Presence and Perception. Even the eldest among them, Sokzac, had only turned 20 just recently, almost a decade younger than Dyon!