Well, I think we are in agreement that promoting ID will have a negative effect on science education.
As to the numbers of American-born PhDs and potdocs, I still think a number of benign factors contribute:
-the demographic pool of Gen X that would be attaining PhDs now is smaller in absolute numbers than the boomers
-the perpetual postdoc is not an attractive career option especially when well-paying industry positions are available in many fields.
IMO, academia itself must bear much of the blame for making a scientific career extremely unattractive to a bright American, who typically will aspire to an upper middle class lifestyle and scorn careers that offer no real opportunity of such.
-the MS is sufficient for career advancement in many of those industry positions
To substantiate these points in detail would require some analysis of the NSF data. But some of your sources make some of these points as well.
Cultural trends are harder to analyze and detect. In many ways the current situation of vocal fundamentalist activism paradoxically coincident with rapid technological change is reminiscent of the 1920's. It is possible that the excesses of the fundamentalists will be their own undoing, now as then, and in time they will fade out of the cultural mainstream.