That does not mean we ask Joe Blogs what his common sense tells him about highly technical subjects, whether that's effects of sniffing glue, bank interest accrual or image upscaling algorythms
Which is why both sides can ask the other side to substantiate their claims or provide expert testimony to justify their claims. If there is no issue, then the other side will be able to relatively easily find someone to testify to that or provide other evidence.
It's how the system is meant to work. If this is being used abusively, the judge will catch on soon enough.