It’s totally true, though.
My parents got married at “older” ages (my mom was older when she got married than the letter-writer is now, and my dad was even older- very age-gap). We were talking about that letter and she was saying that if she had had a younger sibling who would’ve gone ahead of her in shidduchim or if she hadn’t had a group of supportive friends in the same situation then she would have had a much harder time. As it was, she traveled Europe, got her MBA, got excellent jobs, and eventually got married happy, well-rounded and having lived life to the full. (And bought a house immediately after, which is another benefit of two people marrying each of whom has been in the workforce for a while…)
But, she says, even now she still can tend to buy into the whole “nebach single” scenario, and not because she thinks that their lives are unfulfilled, because she knows that they can be. It’s because the frum world makes it so hard for them to feel fulfilled in their lives as they are that they could have the most amazing life scenarios and still feel miserable.
Note that I’m NOT negating the value of marriage, especially in a Torah society, but rather noting that even those who are NOT currently married are still capable of living happy lives full of meaning and value, without crying at the approach of each birthday or shrieking every time the phone rings.
Anecdotally, kind of funny story- in Mishlei class, my teacher was talking about Eishes Chayil and telling us about all of the unparalleled qualities of the married woman. Someone raised her hand and asked what about women who aren’t married? She looked a bit lost for a second and then said that it also says rabos banos asu chayil.
…ve’at alis al kulana. Yeah.