Just sitting outside of the school picking up our grand daughters, popped out and checked both sides of our ZS EV and I can not see any evidence of the seals failing in the way you describe sorry ?.
If I lift up the lower section of the door seal in the wheel arch area to check them, all I can see is a series of small drain holes produced in the seal to allow trapped air to escape when the door is closed !.
Our car is over two year old now and has covered almost 19,000 miles, to give you some reference point to work from.
Now I look at the picture again, the stitching on the seats are white and not blue.
Gen1 ZS EV then ?.
Our rear seats do get used for our grand children and other people etc.
But not excessively.
Do you use / carry a child seat etc in the back of your car that could have caught the seal at some time, by any chance ????.
Just a thought ?.