Psyker Blitzes are in a Good place!

This (above) was my original argument.
I state the fact that smite and Surge staff are not completely overlapping.

And this (below) is what i said later.
Aside from the functional differences, they reside in different slots and therefor allow for different combinations with other weapons and blitzes, so even IF the two were made to be otherwise functionally identical, there would still be an argument for having both exist at the same time.

To which i then referred when saying this:

It should be quite obvious that i initially forgot the „NOT“ in the second sentence (i fixed that mistake now).
Because a staff obviously does not get moved into the blitz slot by applying a different blessing to it.

So no. I was quite consistent with my argument (although i misspoke once).
I fixed it now.
Sadly, you were so overwhelmed by finding one inconsistency in my argumentation, that instead of making a logical conclusion and assuming that i must have misspoken, you instantly jumped to the conclusion that i must have noticed i was wrong.
Because in your mind, a staff will apparently become a blitz ability and free up the ranged weapon slot, if it has the right blessing…

It would not be a bad thing to change ones conviction btw, when figuring out that it is wrong.
You should try it some time.