US Government Security suggestions would disable AJAX based applications

http://news.com.com/The+feds+weigh+in+on+Windows+security/2100-7348_3-6172158.html?tag=nefd.lede

http://csrc.nist.gov/itsec/SP800-68-20051102.pdf 

According to these two articles, the new US Government suggested setups for Windows XP and Windows Vista would disable AJAX based application.  My guess is that this won't go very far, but from a developer standpoint, I have a lot of concerns regarding the limited functionality that this would require of a web application.  Personally, I don't want to go back to 3270 terminals, erm, I mean standard postbacks to get new data.  Aren't we beyond this?