A drop in deaths across all diseases is highly suspect. a part could be explained due to doctor visit restrictions caused by lockdowns and personal considerations yet death doesn't wait for a doctor's visit and would only come sooner. in 1-2 years time we'll have a proper graph of all deaths totalled and we'll know what the approximate impact covid had regardless of cause of death.
The mangled graph shown in the article was edited by the original authors, not the journalist.