The debate got so heated not because of this particular detail, but because of people so fiercely defending it. They weren't simply stating "I like these corners". If you replaced "Harmy" with "Lucas" in some of those posts, you'd think these guys were defending special editions. Also, the fact that the change is already done didn't really help in calming things down.
I'm fine with corners rounded or unrounded, but some people should really think about what they're saying.