You asked the question so you are going to get replies whether they are positive or negative.
You mentioned it is your daily driver with 9k miles, that in itself will account for the issues you are experiencing, think about it, you are getting in and out of the driver's seat at least 4 -6 times a day, 5 days minimum over 9k miles, i'm surprised it is not worse than that given the area in question and the car used being used all the time.
have a look at the passenger side and upload a pic for us to compare, I think it will confirm its not a fault but just wear and tear through daily useage combined with lesser quality materials now being used.
Also seats are becoming more narrow moreso the seat base so you will find side bolsters on sports seats get more pressure than on wider seats used in larger models.