Although it is true that there are women who may find unique and old-fashioned approaches to be charming, there is still potential for them to be off-putting, and it is reductive to think that all women respond positively to this type of pick-up line. Some women may feel uncomfortable or may find it patronizing when someone uses a pick-up line to ask for their number, as it can imply that their presence is not seen as genuine or valued.
In addition, there is a lack of consideration for the fact that women may be in the middle of something, or may not want to be disturbed. Not all women want to be asked for their number, and that should be respected. It is wrong to assume that all women will be charmed by the same approach; in reality, it depends on the person and the context in which it is used.