I had always followed along and pressed my seams to one side when sewing a quilt. That never made sense to me as a I came from clothing sewing but thought I should do what quilters said to do.
On the quilt I am working on I decided to do open seams - it made so mcuh sense especailly when using a thick flannel. As I am sewing I use my wooden iron (clothespin) to flatten the seam open without scorching my fingers. Works very well. Then the final press with the iron sets them open.
I also have no trouble matching seams - did it for clothing! So I am going to adopt this method going forward.
But everyone should do what he/she thinks is right for them.