I don't get the fuss tbh. No one seriously suggested that Petr Cech was wrong for wearing headwear for so long because of the tackle where he got a whack to the head, just as no one seriously complains that rugby plays aren't given extended time off after concussion, even though historically they would simply have shaken themselves down and got on with it.Do you expect a 'flat-line' across the whole of society? In everything? What is the comparison with boxing? With rugby? The same? Different?
Comparisons will always show differences. Because nothing in life is uniform...
Jeez...
I don't think anyone has seriously suggested that heading should be banned, but if there are ways to make it safer, why wouldn't it be explored? As Stewart says, life changes as we gain new knowledge (and with respect, he's a professor of neuroscience, so I'll take his opinion over your own on the impact of heading on the brain).
Incidentally, with regards to your personal anecdote, the research was looking at people over (I think) 40 years of age, of whom about 1.5% in the control group had a neurological disease, versus 5% across all footballers, and around 7% for those footballers who had the longest career. They were also around 3.5 times more likely to die from a neurodegenerative disease than the control group.
I know, as Goat said earlier, that Stewart is not a fan of headgear (although it's not clear what he bases his assessment on), but if we can find a way to make heading safer, why would we not do it?