Normal would be to keep what is good and replace/repair what needs improvement. That is also logical.
Abnormal is to destroy what's good and keep/replace it with all that's negative/harmful/deleterious/destructive.
Now of course the former needs no explanation. But the latter does. To what end and for what reason would anyone devote 100% of his/her time and energy to destroying rather than building? It is obvious that is what is occurring. There is no coverup possible since we experience the results. Will it be explained? I dunno. What's your best guess?