I have been working as a ux consultant for 15 years now, there are two things that are serious problems: 1. Forcing your users into actions they don’t want to take (dark patterns) 2. Having users delete their accounts and data because you didn’t install enough hurdles on their way to the delete button

I am actually not very sure what we see here, is it a dark pattern? It could be, but at the size of Dropbox I could easily imagine the problems haveing a way of cancelling to easily could cause. Especially if we are talking about a file space.