While the feeling of a club is all preference and some may say there is no right swing weight the fact of the matter is shafts are meant to load in a specific way. If the swing weight is not correct then a person is not effectively maximizing loading and releasing the golf club.
The other thing to note is just because a club is working doesn’t mean that a person is in the right fit for a club. Charts have been created to guide fitters and golfers to provide specific swing weight based off of swing speed.
A person may swing the club slower or faster than the specified swing weight and miss out on either distance or accuracy.
This is why it is important for people to get fit for clubs or trial and error their specs until they maximize performance.