Remember also, terracing still works well in lower league football, rugby and even at gigs. It works fine for people of all heights.
Try telling that to my girlfriend who's about 5'1". She's never really been able to see properly on terracing and we always buy seats at gigs nowadays as 2 hours stating at the back of someone's head takes the fun out of it.
It was a good point made earlier that people who are criticising the club over this would be better putting their efforts into getting the legislation changed. If safe standing was adopted widely there'd be much more of a case for a rethink. Until then, it's a largely pointless argument. Personally, I'd rather see the rules on drinking within sight of the pitch relaxed first as that's more of an anachronism.