'I find the idea that the absolute ideal is for a woman's body to show no signs she has ever given birth a bit suspicious, too.'
This, very very much this. An idea also in full flow on the thread about the rude woman accusing OP of pregnancy. The foulest, most vicious language is being used about this - admittedly rude and graceless, and quite possibly disturbed - woman, because apparently it's a terrible thing almost without compare to have a tummy (many of which will come from previous pregnancies/births).
I've recovered well from an episiotomy (birth 1), a stitched second-degree tear (birth two) and a non-stitched first-degree tear (birth three). Things are possibly/probably a little different there (I'm rather farty, tbh, which is of course not ideal). The idea that differences in my genitals mean a non-erasable damage/change in my essence is a bit alarming.
Birth injuries are a different matter. I don't doubt that these and their impact can be worsened by dismissive treatment during birth and after. That needs to change.