Personally, I have always found arguments of this type unconvincing. Is it possible? Sure. Anything is. But the meat of the argument is "how could a stupid, uncultured actor write this?" Sorry, I like evidence and (as this post admits) practically nothing is known about the man, therefore leaving the evidence a bit dry.
And is easily answered by pointing out Shakespeare's equally uncultured actor/writer compatriots, who were producing works nearly as good and in a similar vein. Shakespeare blatantly ripped off plot lines from Marlowe. If Marlowe and Jonson could write their works, why not Shakespeare his?