I wouldn’t make a child suffer for his parents’ rudeness. As a Christmas baby myself (or near enough) I dislike joint presents. As a child it made me feel very overlooked. I used to get hastily wrapped annuals that had obviously been read and similar from little friends whose parents had obviously remembered at the last minute and talked them from the friend’s present pile in time for my party. We didn’t get a lot ‘just because’, so birthday and Christmas presents mattered.
As an adult, my lovely MIL would give me a box of sweets on my birthday and my present on my husband’s birthday in the summer.
As an adult some friends still combine presents, and whilst I don’t get upset at not having even more chocolate and bath things, it does cross my mind when I buy for them later in the year.
I might have asked that the children get separate presents if they’d been Christmas babies, as I remember how ‘and your birthday’ on a gift tag made me feel, and routines start early.
Also, the mum will be very protective of her child, remember, and might not have considered that a one year old won’t care either way. I went to a lot of trouble for my son’s first birthday as I wanted to do everything right, and of course it was a waste of time. I got balloons printed with ‘X’s FIRST BIRTHDAY’, and had a party. The babies all howled when the balloons got burst by little fingers, and it was a like battlefield! My son was more traumatised than delighted. We all learn as we go along though.
Having said that, I would never dictate what people should buy, either for me or my children. That is a bit cheeky, although it avoids the risk of the child getting 6 teddy bears, and the associated jealousy when he prefers the one the other granny bought 😉