Yes, it depends on the cyclist. Some seem sensible, others...

Let me just say that recently a cyclist dressed in black, no helmet, no lights, came at us over a hill in the pitch dark. Fortunately the DH reacted quickly enough to avoid hitting him as he tried to turn left.

No helmet, no lights, dark clothes. I see it too often. They seem to have a chip on the shoulder, but the people they are going to hurt most are themselves.