So automattic/Tumblr's CEO is making the company email servers to redirect all mail from teamblind.com to his own personal address instead of the actual person who registered to Blind, so he can know who signed up using their corporate email (the only way to sign up).
Not only that, but by doing this, he could just go through the company email address list, hit the "forgot your password" link, and find out who already has an account, and even steal it.
@javi One would have thought that the folks at Blind would have considered this threat model when requiring people to sign up using their corporate email.