I've never truly understood this argument, to be honest. Those who are progressing through the tiers will find virtually no difference in what they are doing, because by the time the next tier comes in, they should not even need anything from the vendors anymore. All of the stuff that's rolled back to the justice point vendor has no real use for them.
Progression guilds should be unaffected, unless it somehow upsets someone that other people that they don't play with can get gear almost as good as they can months later.