I personally don't see what the big deal is. This is actually the first time it is a Psychic/Steel, rather than a Steel/Psychic. Yes, it's the same, but it's still unique in its own way.
It doesn't even look like a psychic steel and its special move does not represent its typing. Fire/steel or fire/psychic would have been fine since it looked like a part fire type but in no way does that look like a steel/psychic...