Reinforced concrete columns at the corners of the bay window

Hello,

in the ground floor, reinforced concrete columns are planned by the structural engineer in the (inner) corners of the bay window. Neither the energy consultant nor the shell builder have ever seen anything like this. Is this necessary? Does anyone else have it like this?
We do not like the mixing of materials (aerated concrete vs reinforced concrete with insulation).

Thank you very much in advance!

Are the columns perhaps not structurally sufficient, meaning not pressure-resistant... just ask the structural engineer why the supports have to be there, he should know.

Is the house from this still being referred to?

Do side walls of the dwarf gable possibly end there (the drawing is not so clear)?

It is still the house, at least the outer walls still fit.

The reinforced concrete columns are planned at the inner corners, not at the outer ones. Unfortunately, I cannot upload a picture right now, it may be provided later.

I meant this:

we also have a bay window and an internal support made of concrete was poured there. A steel beam rests in the ground floor ceiling, connecting the living room wall with the kitchen. The steel beam was needed for structural reasons.

Best regards
Sabine