I'm just a lowly project manager, but my understanding from the tech wizards around here and those I work with is this:

It is possible, using the advanced technology available today, to make on your website a button which allows a subscribed user to independently cancel a subscription that was made online.

Through this technology, one no longer has to compose a pleading e-mail to customer service. No need to take on faith the co-founder's confusing promise that they want to make it easy for you to cancel while they simultaneously withhold a "cancel" button, with no stated plans to add one.

I mean, look, if you really don't intend to make a serious amount of dough off of people being too forgetful or busy to unsubscribe from a subscription they no longer want... what's the harm?