>>872482Yo misunderstand. Lost technology is lost when someone hordes it and doesn't allow anyone to use it at all. It is lost when it is stored in some dusty library never to be used until 50 years later it gets reinvented or someone finally finds the book.
If you don't use the technology or your civilization turns to ash, you lose a great deal of advancement.
>It's not like someone invented the steam machine and then the church came and was like "NO" and then it was only to be rediscovered several centuries later.It is exactly like that. The aeolipile was the first steam engine in the first century AD. That technology was lost until the late 1600s. The technology behind the antikythera mechanism was also lost and rediscovered.
Now what the church did wasn't to stop advancement, but to tightly control it. This massive restriction and acidic environment lead to less development and the loss of previous advancements due to their being shelved by the church. All things that helped the church were of course allowed, the biggest being the printing press. Which helped to end the dark ages after 1450. The printing press is one of the big things pro-religious people use as an argument that the church did not suppress technology during the dark ages, yet it seems they also don't know when the dark ages ended and when the printing press was invented.