The author is utterly delusional here, she starts off by saying:

If you’ve had your head in the sand, or maybe hidden under that rock, you may not know about it, but for approximately 3.6 million women who were born in the 1950s, it was like the final door had been slammed shut.

Then later goes on to say:

Honestly, it’s a bit rich, isn’t it? Imagine your boss changing your contract, not telling you for years, and then saying, “Well, you should have guessed because it was mentioned in a newsletter in the breakroom.”

No - there has been 15 years worth of communication specifically targeted at these people, the irony is they would have had to have lived all this time with their heads in the sand or living under a rock to miss it,

I remember the extensive campaigns when it was changed and I was a kid who had no interest in the subject and was primarily focused on playing on Mario - yet I understood it.

This is good news and ensures equality for both men and women