This is a feature that might create some value for people who
are not your intended market. They are not your intended market in several ways:
+ They are high demand.
+ They are predisposed to delete their accounts.
+ They have low interest in what you offer.
Signups only matter if the person is retained. It is not the best place to optimize. Making a product good enough to overcome that reluctance is harder and being easy to implement is why account deletion is attractive.
If people can try out the product/service without an account, then there's no friction for people with a reluctance to sign up. Not requiring an account may mean directly interacting with users on a one on one basis. That's a good thing at the point when signups by people who demand account deletion move the needle on the size of the user base.