I also caught that part. Viserys was a crazy bitch, but if you read further into the article, Shapiro points out that Dany doesn't really have a plan once she gets to Westeros.

Sometimes when I think about the possibility of her coming to Westeros and really conquering the continent, I don’t think that anyone will be left for her to rule. This crazy Targaryen chick is so out of her mind with her never dying revenge. When she will finish with Westeros there won’t be anything left. Let’s be honest most of the big houses of Westeros betrayed her nut of a father Aerys Targaryen. The only ones that didn’t were house Martell but she ditched Quentyn so they won’t be happy with that. Daenerys does not have any friends in Westeros now. Even if she doesn’t destroy the entire Westeros continent where is she planning to put her entire army of Unsullied, Sellswords, slaves and Dothraki Barbarians in the end? I’m personally really intrigued about the Unsullied because the Sellswords will leave for their next higher bidder the slaves and the Dothraki will eventually adapt (that will take a long time indeed). What do you do with 8000 baby killers with no balls? They can’t have children, start a family's nor start working in the fields like normal people. What is Daenerys supposed to do with them in the end?

I certainly don't agree with everything the author said, but he brought up a few good points.

It's also a bit aggravating that Martin protects Daenerys in a way. Jon Snow, Jaime Lannister, and Robb Stark have all made risky decisions that have had dire consequences, but Dany always seems to have luck on her side.