Just like 16 years old people can’t vote because too young, 80+ years old people should not be able to vote, most of them are too distant from everyday reality of younger people to be able to take a wise decision for the community and also often stick with (way too) old ideals from their years
All these arguments used against children were once used against women.
“They are feeble minded. We are protecting them by not placing undue burden on them. No need to worry yourself with how society functions. Off you go to play with your shiny trinkets.”
All these wise adult men are already fools for propoganda, are ill-informed, vote against their own interests, etc.