I can see why the more sophisticated website designer or whatever might be hesitant or dissatisfied with the website building software. It is basic.
But, I can see why. It's meant to be un-intimidating to the non-designer. I feel that it can create a fine looking website. It seems like the creator won't have much room for creativity but still, a good option for someone looking to create a legitimate website without much knowledge of say, Dreamweaver or HTML coding.
If this is the site we will be using to re-create our crappy website, then I don't think it will be a problem. The site is so bad as it is I'm sure anything we do will be an improvement.