I watched a group of fighters from one kung fu school prepare for an event. The only drill I saw them do that involved them hitting anything was someone holding a kicking shield, and them wailing on it without breaking for 100 strikes, then the next person. Not one of them developed entering skills, not one of them had the timing and distance to use their striking in the actual fights. As they hit the shield, they'd invariably end up leaning into it, not that they even got to that bad habit in their fights.

Again, because outside info, like how to use training tools, is apparently bad.