Even if such technologies were developed, this would not change neither our biology nor our history.

Nowadays, we have vehicles like planes or helicopters which make flying possible for human beings. However, this doesn't mean humans are flying animals and I wouldn't advice any person to try to fly on their own without the assistance of adecuate technology. Also, the fact that we can fly now, doesn't erase the fact that we spent most of our history without this being a possibility. This isn't a minor a detail because our capability (or lack there of) of flying has affected our history. Pandemic notwithstanding, you can now travel from Los Angeles to Tokio in matter of a few hours. That certainly was not possible during the Middle Ages, for instance.

Likewise, even if such reproductive technology were developed, there will be still women and men around and their anatomy will still be arranged for the production of either eggs or sperm respectively. As the existence of males and females predates this hypothetical technology, it would be incorrect to state this technology would prove that sex is a social construct. Such technology would not erase the biological differences between the sexes, either. Likely your doctors would still need to know your sex in order to treat you effectively; and men would still have advantage over women on sports. Whatever social change this hypothetical technology would cause, it would not erase the social importance that sex had through our history up to its invention and, I think, sex would still be very socially meaningful after it.