Science keeps advancing, but the thinking of many people will latch onto an idea and not update their thinking as the science evolves. Often religion latches onto old concepts as well.
One example of refusal to update is the idea, I heard on newscasts at the start of the pandemic, that a drug used to treat malaria could possibly be used as therapy for the corona virus.
A few days after those early newscasts, it looked like they were finding newer evidence that it wasn't effective for corona virus. It could even cause more harm than good, but some people stuck to that idea while others moved on to what now appears to be more effective treatments.
This is an example of folks sticking with an early idea that offered some hope, but later was superseded with better ideas.
I moved on, quickly though I will admit that those early newscasts offered some hope, back in the first few days after the shut down.
My hope came more from the broad concept that both treatments and vaccines were on the way, but not specifically about any one product.
Today the pandemic seems all but totally over and we have good vaccines plus improving methods of treatment. The virus may be less deadly now, than it was in the first year as; especially the Delta Variant was scary.
We seemed to have come a long ways since 2020 as things like dancing and social gathering have come back.