Do you really think everyone has 100+ hours to spend learning the idiosyncrasies of HTML and CSS? That's asking a lot for someone that just wants to put up a landing page for an idea, or to design their portfolio.
Everytime my artist friend wants to put their portfolio online, I suggest they start by writing some simple markup and half an hour later I'm explaining the finer points of the box model while they whinge about how they'd rather be using Adobe Illustrator. The truth is that there will always be a group of people that are able to visualize what they want to create better than they can verbally, or symbolically.
For layman person wanting to create a website with static page it is ok. But I am talking about professional web designers who creates templates for dynamic web page. Why the hell they would prefer generator like this? In the long-term it will turn into maintenance hell.
