I don't know what the OP was thinking but it is very common for companies to say they are hiring when they don't have a specific position to fill at the time. First, because it is a sign of health, particularly if you want to position yourself as growing. Second, a lot of HR people want to have a pool of people to contact when a position opens.
I wonder, is that even legal in California given the CCPA? If they're not actually actively hiring, what "business purpose" do they have for retaining that data?
I feel like anyone in California who gets a call back from HR thanks to this data mining should report the privacy violation.
Also seems necessary for all the H-1B fraud.
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.
They see ROI from the cost.