As with any other religion, there is plenty of material critical of Islam available on the web today. Some of it is even pretty decent as an introduction to problems with Islam.
For example, there’s the “Myths of Islam” page, part of the thereligionofpeace.com web site. It aims to get beyond some of the pro-Islamic propaganda that is easily available. And the web site of a whole seems like a good place to visit, if for some reason you enjoy staying up to date on outrages committed by the violent streams within political Islam.
So, yes, “Myths of Islam” type pages are accurate enough, if you take the more conservative versions of Islam to define the religion. But you also have to keep in mind that this is much like condemning Christianity by describing the follies of fundamentalist Protestantism. It’s useful in the right context, but it is hardly comprehensive. Focusing on one species of outrage or stupidity is questionable, since such anti-religious sites regularly buy into the claims of one faction to represent “True Christianity” or “True Islam.” Religions are a lot more complicated than that.