"Empty vastness - no trace of holiness!" - Hui-Neng, Zen patriarch
Serious, the article reveals no proven evidence pro or agianst anythign and anyone.
But I know the problem is real, and a lot of cheating no longer happens just at online chess platforms (thats why I do not play there), but in professional touranment business, too. Modern elctronics... well, evertyhing has two sides.
I played correspondence chess, and there it was never considere dcheating if you used books for research in analysis. Many players played CC just to deepen their theoretical knowledge and analysing capabilities. Later, when software b ecame good enogzhh for the task, copmp0tuers entered this realm, too. I still do not see that as chetain in that context as long as it is not done in the hiodden while claiming one does not use it. CC is simply another context, and analysing in depth and with all means avilable is declared goal of the effort.
Three players I played with in this way (using emails instead of postcards, however), for 20 years, unfortunately all three fell victim to Corona. Never no more, they are gone.
In my youth days I played CC tournaments (via postcard) and in the German association, and successfully.
Chess is the game of games.
