I'm not sure how you can call this piece "relatively offensive" -- it's merely practical. Far from not giving "near enough attention" to illegality of discrimination on the basis of pregnancy, the article starts off right at the beginning with the following:

You are not obligated to disclose your pregnancy. Moreover, because of federal and state laws against discrimination, it is illegal for potential employers to ask questions about pregnancy, marital status or your future family plans, said Peter Hillman, co-chairman of the employment law group of Chadbourne & Parke in New York.

Despite those legal protections, discrimination can be subtle and difficult to prove - who can judge the real reason you were cut after the first interview round? Choosing to share your great expectations exposes you to unnecessary risk, Mr. Hillman says. "We'd like to think that with all the legal context around this issue and the great advances that have been made by women in the work force, not to mention the sensitizing of companies to this issue, that is never a problem." Mr. Hillman said. "But that is not the case."

Yes, discrimination on the basis of pregnancy is illegal. But also, YES, it is notoriously hard to prove, and discrimination laws are notoriously hard to enforce. So, as a practical matter, if you are pregnant and seeking a job, it is advisable to think of varying strategies for dealing with reality.

Is there another article to be written on why employment discrimination (on the basis of pregnancy, sex, race, etc. etc. etc.) is rampant despite legal prohibitions? Absolutely. Was that the purpose of this one? No.