Truth gets lost because it is what ultimately sets us free.
20 percent of people walking around cannot handle the thought of someone being free.
Being free equals higher levels of ability.
The idea of "others" having a higher ability causes the twenty percent to quiver with fear of their own existence.
They imagine they will perish.
Its just in their imagination.
Nevertheless the fear is real to them and believe it is imperative to "keep others down".
Hence - no freedom for others.
So truth must go if it appears.
This is what happened to Buddhism.
It was all truth in the beginning.
Slowly the twenty percent altered it and today only a hint of the truth remains.
Same with peoples health.
The medical profession hands out lies as truth.
If any truth squeaks through then it is squashed.
So if your aware of someone cleverly trying to discredit something you know as truth then its quite possible that this person doesn't want the truth out because it ultimately leads to freedom which means a higher level of ability for some or many. - The one thing one out of five people walking around believe they can't have.