If threads are being closed and deleted, it's usually because either the thread has degenerated into a flame war, people are being offensive, or they are personally attacking the developers, all of which are actually violations of the terms of service. It's SE's forum, they make the rules, you have to abide by them.

As for the Armorie, that's always been a mystery why it's so limited, but I guess it's to actually force players to convert used gear to materia instead of simply storing it *shrugs*.