Give the citation, numbskull. Lack of citation hinders response, and obscures context. Anyway, the quote doesn't prove what you want it to:
All societies are based on rules to protect pregnant women and young children. All else is surplusage, excrescence, adornment, luxury, or folly, which can—and must—be dumped in emergency to preserve this prime function. As racial survival is the only universal morality, no other basic is possible...
This statement has no bearing whatsoever on Heinlein's preferred government (or lack thereof). His high regard for women, as the scarcer resource for propogation of the species, is also well attested. More to the point, here is another quote from the same source, "Time Enough for Love":
Be wary of strong drink. It can make you shoot at tax collectors - and miss.
Your Google broken?
The Notebooks of Lazarus Long. Anyone you was even marginally familiar with Heinlein would recognized the quote instantly.
Anyway, the quote doesn't prove what you want it to:
Attempts to formulate a "perfect society" on any foundation other than "Women and children first!" is not only witless, it is automatically genocidal.
Put some ice on it.