He says pretty explicitly why he deleted his account: > They should know better than to put their marketing plans ahead of their users' security. They're not g

He says pretty explicitly why he deleted his account: > They should know better than to put their marketing plans ahead of their users' security. They're not going to learn about security until it costs them users. So, scratch one user. I think this is a reasonable justification, and I imagine the point was to get others to do the same.