I haven't rtft. However, for the people who say that this is something that doesn't happen in real life, Yes It Does.
I attended some private antenatal sessions in the summer of 2021 (Happy Parent Happy Baby, fwiw). It was on many levels a wonderful course. However in the beginning we were given a list of the sessions that we would be doing. It said something like in session 5 there would be a bit on 'mum health following birth'. It also said that in session 5 the group would be split so that mums would be in one group and birth partners in the second group. Fine.
Just before session 5 rolled around we were sent a reminder about the class. However, the reminder said that there would be a bit on 'self care following birth'. Okay. It then said that the class would be split between 'birth parents' in one group and birth partners in the other.
Furthermore, in the session about hypnobirthing the literature again referred to 'birth parents'.
So yes, antenatal classes are now removing the words 'mum' and 'mother' from their literature.
I was furious in my feedback form.
Fortunately the women actually leading the class still managed to use the word 'mother'. Also, session 2 included a talk by a women's physiotherapist. Not sure how they planned to rename that description. (The removal of the word 'mum' clearly happened somewhere between sessions 2 and 5).
So no, this is not the Daily Mail whipping up a storm in a teacup. This is happening to the English language.
If you still don't believe me, watch the Stella Creasy podcast on the Covid vaccine where she talks to four experts about the impact of the vaccine if you're pregnant or trying to conceive. Dr Victoria Male refers to 'pregnant people' instead of 'pregnant women' Every. Single.Time.