Almost all the postings are fake and used for data collection. Why would they spend their seed or series A cash on people who they have never worked with or th

Almost all the postings are fake and used for data collection. Why would they spend their seed or series A cash on people who they have never worked with or they do not know? For them it is easier for them to hire with in their own network in YC rather than gamble on candidates that they have never worked with before.