Yep that's fair, a faithful adaptation would have turned out very different. However this is the script the studio green-lit, and Verhoeven worked very closely

Yep that's fair, a faithful adaptation would have turned out very different. However this is the script the studio green-lit, and Verhoeven worked very closely with the writer to realise his (the writer's) vision. I love it, I think it has merit in it's own right, but sure it's not at all what an actual Heinlein fan would want or expect. It's really more of a satirical commentary on the book.