Dave: It's been three days since your last comment, an no response. [1]
Well, your lack of response to my and everyone else's questions certainly confirms my impression about AngelList, and says a lot more than your non-apology apology did.
I gave you more than a fair chance to respond, provided you the date and time of my unanswered message from more than a year ago, and even gave you a second chance in case you deleted my year-old email, by sinking even more of my time into summarizing the problems I originally reported to you, and posting them here for you to read again. [2]
But still: no response from you, as more and more people continue to announce they're deleting their AngelList accounts.
You're asleep at the wheel, the lights are on, but nobody's home. If your attention has wandered on to other things, and you no longer have any interest in maintaining your web site or responding to your users for over a year, then you really should shut it down gracefully, and save everyone from wasting their time and having their privacy unexpectedly violated. Old unmaintained web sites running on auto-pilot that collect sensitive private information from their users (and automatically forge first-person email pretending to be from their users in order to virally promote themselves) are a dangerous security threat, which should be shut down for the safety of the internet.
[1] https://www.youtube.com/watch?v=Yd0fBXwDBmo
[2] https://news.ycombinator.com/item?id=11350697