There might be local short term factors he ignores but my guess that he ignores it due to the fact that these excess deaths are an ongoing observation since man

There might be local short term factors he ignores but my guess that he ignores it due to the fact that these excess deaths are an ongoing observation since many many months and in many counties. So any local and/or temporary event likely is not causal just coincidental and the effect of these should be way way lower like fraction of a %. If strikes (which specifically try to avoid putting peoples live at risk) would actually increase the excess mortality by anywhere near 10%, this would be all over the news that's for sure.