Now seriously, all those "baffled" scientists can't check whether the excess mortality happens on vaxxinated or not to check the corelation?

There are 4 factors

1) Covid. Long term death after covid infection (??)
2) Vax. Death after vax.
3) Masks. Masks affecting the way we breathe or plastic in the lungs/blood.
4) Lockdowns affecting people psychologically.

2) can be easily found through the dead person records.
3) can be found between people who were out of home often / those who work all day with a mask and people who stay home all the time not requiring masks.
4) checking people who were in the lockdown group and people who weren't.