I learned to press to the dark and did that a long time. Then one of the quilters I watch on YouTube started pressing open and did a deep dive about it is just as strong etc and to the side was because of hand piecing. Whatever reason I tried pressing open and speaking just for myself, I get a better result. I quilt for my own pleasure with no deadlines or pressure and don't mind if it sometimes takes a bit longer. And yes it is more tedious if I have a patchwork with a lot of pieces and intersections but it's okay with me. The beauty of quilting is that there is usually no "one and only right way"!