they jam ocer time
I'll take that over PVC any time. Here, people are just allowed to install them, regardless of whether the building looks good or bad with them There are some beautiful Eighteenth Century buildings in Poznan where people shoved white PVC windows and they look really bad, like a 90 year old lady with silicone tits.
They seem the norm here now, that and plastic roofs.
In a new building like the one with the OP's flat it isn't a tragedy, but still very mucg the second-class option.