Triple glazing, like all the other stuff, is by no means standard... and if it is offered from the start without extra charge, it usually means, conversely, that the house only just meets the KfW-70 values or similar requirements... in other words, savings were made on the wall construction or other things.
Also, and especially the construction companies want to make money and don't give you anything, but really nothing...
Yup, bay windows are lovingly called "wall warts" by architects...
Yes, the lower third of the windows is fixed glazing... since we don’t open the windows anyway, the appearance from the outside was more important to us...