Sure but these YC spammers are identifiable and have much more to lose https://www.ycombinator.com/ethics/

> Some examples of ethical behavior we expect from founders are:

> - Not spamming members of the community

> To maintain our community, if we determine (in our sole discretion) that a founder has behaved unethically during or after YC, we will revoke their YC founder status. This includes access to all Y Combinator spaces, software, lists and events. All founders in a company may be held responsible for the unethical actions of a single co-founder or a company employee, depending on the circumstances.