I would think a Freeper would know better than to settle on Snopes. Here’s some more aspartame info:
http://articles.mercola.com/sites/articles/archive/2013/02/18/aspartame-toxic-effects.aspx
I went to your source to see what they had to say about aspartame. They quote the clown Doctor of Alchemy who has the website you referred to. Surprise!!!
It turns out to be one of those companies selling quack medicine. Of course quacks don’t want the public to buy thoroughly tested and scientifically researched products, they want to sell their own snake oil.
I don’t rely 100% on Snopes (politically left) that is why I also included Truth or Fiction.com.