I agree, but as has been said, I do think measures will be taken to avoid the possibility of such abuse/assaults taking place, and the most effective way is to prevent said pitch invasions taking place. How that will be achieved is another issue, but I do agree that it will be a shame for them...
Potentially banning many thousands, or just the 'unlucky' few that get caught/recognised, leaving probably 99% of them in the clear? Doesn't seem much of a preventative measure.