I can't see any reason why age wouldn't be useful information for a VC. As for refusing to use age as a signal on principle, I'm not sure that it helps anyone.

I can't see any reason why age wouldn't be useful information for a VC. As for refusing to use age as a signal on principle, I'm not sure that it helps anyone. At the end of the day that means that time, effort, and money are being invested into companies that VCs could've known would have a lower likelihood of success.