It's a little unfair, yes. But not very unfair. You can get equivalent gear such as Leviathan Blade and Aegis. The shield isn't even very good. Many people (including me) think that the honor reskins are uglier than their regular versions.
Is it also unfair that players who played during the beta got Groundbreaker armor, that the rest of us can't get? A little, but not worth complaining about.
Much of the value of these items is due to their exclusivity. If everyone had them, then no one would want them, because they have little inherent worth.
It's only cobalt line reskins, pretty but not really useful. Maybe someday in the future SK will have an event like this but who knows. Till then the only way to get these things is doing something that would get you perma-banned.