Nothing to do with physicality in my opinion. Everything to do with lack of quality.
Dundee shade it in that department from what I have seen this season
There is every possibility that football will need to look into heading in the sport in the not so distant future. Other than that, it's down to most humans having the capacity to make an informed choice.
Because one group would like racing banned, doesn't mean the sport should not be required to minimise the risk of injuries and fatalities. Taking away the jumps would seem entirely sensible.