Are those routines useful in Wushu?

Routine includes offensive and defensive skills, offensive and defensive movements, and it is a trick to refine it. Therefore, routines are useful. The present routine has indeed lost the function of martial arts, but it is specially used for performance, which is caused by modern people's lack of efforts and intentions. More importantly, after modern changes and updates, fighting has made many old tricks no longer adapt.

Suppose two people, three people, four people, 10 people play together. Do you fight each other according to some routines of Changquan or Wing Chun? Routine is dead, one person lives, one side uses hands, the other side uses feet, and some people live with weapons. Can you punch them with some Nanquan or Shaolin? Of course, you can knock it down with Nanquan and Shaolin Boxing. Didn't Bruce Lee beat several armed gangsters with Jeet Kune Do? After practicing for decades, I can only fight empty-handed people, but I can't deal with armed people. What's the use of practicing? Didn't you disappear long ago?