I'd wager the vast majority of people would be more than happy to swap seats so that people struggling to see can be closer to the front/end of the row where they can see properly.
As for disabled seating still being restricted...I seriously doubt that happens at St Marys as the disabled seating is either right at the front of in those separate little square blocks. But at away grounds it is probably different. That's something for those clubs to deal with as well, though.
I'm surprised there isn't legislation already about providing unobstructed seating to be honest.