I thought it used to select the Content folder as both a Poser and D|S content directory, but it seems not to in recent builds - it will pick the Content folder on a new install, or if you remove all other D|S content folders, but otherwise it waits to be told what to use (or to search).

I don't think the problem (here) is the installers, and Clint is presumably pretty handy with them after all these years anyway, it's the distinction between the two content types (though I can understand why DAZ needed it - you could get in a mess in your Poser folders if they were deletable and renamable like D|S folder, and the difference between being able to import but not export Poser content in the Content palette while being able to both open and save D|S content could lead to confusion).