ASP.NET 2.0 Security... Damages Layer Separation

I have been reading about "The Demise of the Security Application Block" and I quote:

"Specifically, the factories, interfaces and providers for authentication, roles and profile have been removed. Equivalent functionality is provided by the new System.Web.Security.Membership class and System.Web.Profile namespace."

I think that is a really big mistake architecturally speaking... why? well because System.Web.Security.Membership class and System.Web.Profile are for
WEB applications, not for WindowsForms.NET applications, and authentication and authorization should be services independent of the presentation
mechanism, the Security Application Block should wrap the System.Web.Security.Membership class and System.Web.Profile namespace functionalities
and allow the developer to work in a presentation independent way (or Microsoft should change System.Web.Security.Membership class and System.Web.Profile and make them
System.Security.Membership class and System.Profile)

I think the easier thing to do is to bring back the the factories, interfaces and providers for authentication, roles and profile of the Security Application Block that provided this services without violating layer separation (following the good example of JASS).

And perhaps, in the future the "revived" Security Application Block should be merged with .NET code... or a new presentation independent API named ".NET Authentication and Authorization Service" (NASS?) should be created...

What do you think?