Wall structure 36.5 Poroton T8 including clinker

We have now been offered the following configuration from the general contractor for the KFW55 wall construction: 240mm Poroton (T8-filled), 120mm mineral facade insulation, 10mm air gap, 115mm clinker

I am surprised that the Poroton block still needs to be filled - what do you think about that?

The filled Poroton brick slightly improves thermal insulation, but in my opinion, more important is the reduction of sound transmission between the floors and to the outside

We have now been offered the following configuration for the KFW55 wall construction from the general contractor:
240mm Poroton (T8-filled), 120mm mineral facade insulation, 10mm air layer, 115mm clinker
[...] - what do you think about that?

I say that this is merely equivalent to the originally mentioned construction: neither noticeably better nor worse, just different.

I am surprised that the Poroton block still has to be filled

That mineral wool alone does not replace the same thickness of porous bricks 1:1 does not cause me any surprise.