It was too “easy” for regular users to get upvotes and too hard for bots to get upvotes probably. Certain comments and posts now have downvote caps of 0 points so depending on what agenda a comment supports, it may not be possible to downvote into negative numbers.
As a rule of thumb, anything you say is getting downvoted but if someone else posts the same thing, it gets highly upvoted. Reddit is cancer.
I don’t really subscribe to the whole if civilization collaspes there will be no technology in anyone’s lifetime again thing. You aren’t going to go back to ordering shit off amazon from your smartphone or anything. However the knowledge that things like refrigeration, radio transmission, internal combustion engines, water treatment and such are possible is going to drive people to eventually find out how to get it by any means necessary.
How quickly this happens is a question of whether the majority of people adopt a “technology is too dangerous/a sin against God” idealogy or not.