No pressure!
So I can't believe the ISS computer doesn't have some sort of redundancy in place to prevent a catastrophe when there's so much money and lives at stake.
But I liked your joke.
Someone got an idea that they could manufacture the old missing parts (using new manufacturing process) and now they did and it works.
But it still doesn't change the fact that swapping out with a completely new specification can have unintended consequences. They waited until a computer failed to swap, so if it did not work, they'd run at reduced redundancy.
From the HN guidelines:
Please don't comment on whether someone read an article. "Did you even read the article? It mentions that" can be shortened to "The article mentions that."