I don't know, is this a problem? In some sense, it seems more honest to me than having a delete button that simply sets a "deleted" flag on you in a database.
It's representative of the values they hold as a company. If you can't be bothered allowing your users' control over their own data, it says a lot about their deeper intentions.
Most companies give you less control though. Setting a deleted flag is worse, isn't it?
There is a certain accountability that is assumed after I delete my account for that account not to show up again somewhere some time. If all they do is set a flag in a database maybe that's good enough. But if they wanted to go further maybe they could scrub the data associated with it too. But that shouldn't be my domain, that should be their domain to take these measures. I should simply have to state my intention.
It's a problem for me because people have created four Skype accounts with my email address so far and there's no way to delete them.