[Puddleglum]

Unless they were informed of a precedent invalidating their donation contracts (which they weren’t because one probably did not exist) then they “knowingly” entered into nothing of the kind.

What did they think they were donating for? To make sea-monkies? When you make a baby, you are one of its parents. That's basic biology that no contract can void.

[elfman2]

"What did they think they were donating for"

Anonymous sperm donors helped strangers have babies through non-sexual medical procedures with absolutely ZERO expectation that their time honored legal contracts would be invalidated by a judge.

That’s why they did not “knowingly enter the business of parenthood” as you say, at least not like this.

[cyborg]

Out of sight, out of mind my friend.